TM-55-1520-228-PMD

TM-55-1520-228-PMD
TM 55-1520-228-PMD
TECHNICAL MANUAL
PREVENTIVE MAINTENANCE DAILY INSPECTION CHECKLIST
OH-58A/C HELICOPTERS
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
This is the reproduction
U.S. ARMY AVIATION AND
MISSILE COMMAND
8 AUGUST 1980
TM 55-1520-228-PMD
C16
CHANGE
Headquarters
Department of the Army
Washington, D.C., 20 January 2011
NO. 16
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
A and B
17 and 18
Insert Pages
A and B
17 and 18
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C16
By Order of the Secretary of the Army:
GEORGE W. CASEY, JR.
General, United States Army
Chief of Staff
Official:
JOYCE E. MORROW
Administrative Assistant to the
Secretary of the Army
3
DISTRIBUTION: To be distributed in accordance with Initial Distribution Number (IDN) 311257, requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C15
CHANGE
Headquarters
Department of the Army
Washington, D.C., 20 May 2009
NO. 15
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
A and B
12.1 through 20
Insert Pages
A and B
13 through 22
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C15
By Order of the Secretary of the Army:
GEORGE W. CASEY, JR.
General, United States Army
Chief of Staff
OFFICIAL:
JOYCE E. MORROW
Administrative Assistant to the
Secretary of the Army
0911302
DISTRIBUTION: To be distributed in accordance with Initial Distribution Number (IDN) 311257, requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C14
CHANGE
Headquarters
Department of the Army
Washington, D.C., 25 August 2005
NO. 14
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
1 and 2
3 and 4
12.1/(12.2 blank)
13 and 14
Insert Pages
A and B
1 and 2
3 and 4
12.1 and 12.2
13 and 14
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C14
By Order of the Secretary of the Army:
PETER J. SCHOOMAKER
General, United States Army
Chief of Staff
OFFICIAL:
SANDRA R. RILEY
Administrative Assistant to the
Secretary of the Army
0520307
DISTRIBUTION: To be distributed in accordance with Initial Distribution Number (IDN) 311257, requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C13
URGENT
CHANGE
NO. 13
Headquarters
Department of the Army
Washington, D.C., 18 July 1997
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
17 and 18
18.1/(18.2 blank)
Insert Pages
17 and 18
18.1/(18.2 blank)
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C13
By Order of the Secretary of the Army:
DENNIS J. REIMER
General, United States Army
Chief of Staff
OFFICIAL:
JOEL B. HUDSON
Administrative Assistant to the
Secretary of the Army
03650
DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1257, requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C12
URGENT
CHANGE
NO. 12
Headquarters
Department of the Army
Washington, D.C., 30 March 1994
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
9 and 10
12.1/(12.2 blank)
15 and 16
Insert Pages
9 and 10
12.1/(12.2 blank)
15 and 16
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C12
By Order of the Secretary of the Army:
GORDON R. SULLIVAN
General, United States Army
Chief of Staff
OFFICIAL:
MILTON H. HAMILTON
Administrative Assistant to the
Secretary of the Army
06207
DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1257, requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C11
URGENT
CHANGE
NO. 11
Headquarters
Department of the Army
Washington, D.C., 13 April 1992
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
15 and 16
Insert Pages
15 and 16
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C11
By Order of the Secretary of the Army:
GORDON R. SULLIVAN
General, United States Army
Chief of Staff
OFFICIAL:
MILTON H. HAMILTON
Administrative Assistant to the
Secretary of the Army
00744
DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1257, PM requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C10
CHANGE
Headquarters
Department of the Army
Washington, D.C., 14 February 1992
NO. 10
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
9 and 10
13 and 14
Insert Pages
9 and 10
13 and 14
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C10
By Order of the Secretary of the Army:
GORDON R. SULLIVAN
General, United States Army
Chief of Staff
OFFICIAL:
MILTON H. HAMILTON
Administrative Assistant to the
Secretary of the Army
00844
DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1257, PM requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C9
URGENT
CHANGE
NO. 9
Headquarters
Department of the Army
Washington, D.C., 19 February 1991
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
9 and 10
17 and 18
Insert Pages
9 and 10
17 and 18
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C9
By Order of the Secretary of the Army:
CARL E. VUONO
General, United States Army
Chief of Staff
OFFICIAL:
THOMAS F. SIKORA
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1257, PM requirements for TM 55-1520-228-PMD.
TM 55-1520-228-PMD
C8
CHANGE
Headquarters
Department of the Army
Washington, D.C., 16 October 1989
NO. 8
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
7 through 12
—
17 and 18
18.1/18.2
Insert Pages
7 through 12
12.1/12.2
17 and 18
18.1/18.2
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C8
By Order of the Secretary of the Army:
CARL E. VUONO
General, United States Army
Chief of Staff
OFFICIAL:
WILLIAM J. MEEHAN II
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM Maintenance requirements for OH-58A and OH-58C Helicopter, Observation
TM 55-1520-228-PMD
C7
CHANGE
Headquarters
Department of the Army
Washington, D.C., 10 July 1989
NO. 7
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
1 and 2
Insert Pages
1 and 2
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C7
By Order of the Secretary of the Army:
CARL E. VUONO
General, United States Army
Chief of Staff
OFFICIAL:
WILLIAM J. MEEHAN II
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM requirements for OH-58A and OH-58C Helicopter, Observation
TM 55-1520-228-PMD
C6
URGENT
CHANGE
NO. 6
Headquarters
Department of the Army
Washington, D.C., 4 January 1988
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
13 and 14
Insert Pages
13 and 14
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C6
By Order of the Secretary of the Army:
CARL E. VUONO
General, United States Army
Chief of Staff
OFFICIAL:
R. L. DILWORTH
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM requirements for OH-58A and OH-58C Helicopter, Observation
TM 55-1520-228-PMD
C5
URGENT
CHANGE
NO. 5
Headquarters
Department of the Army
Washington, D.C., 10 November 1987
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
11 and 12
Insert Pages
11 and 12
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C5
By Order of the Secretary of the Army:
CARL E. VUONO
General, United States Army
Chief of Staff
OFFICIAL:
R. L. DILWORTH
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM requirements for OH-58A and OH-58C Helicopter, Observation
TM 55-1520-228-PMD
C4
URGENT
CHANGE
NO. 4
Headquarters
Department of the Army
Washington, D.C., 23 December 1986
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
11 through 14
Insert Pages
11 through 14
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C4
By Order of the Secretary of the Army:
JOHN A. WICKHAM, JR.
General, United States Army
Chief of Staff
OFFICIAL:
R. L. DILWORTH
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM Maintenance requirements for OH-58A and OH-58C Helicopter, Observation
TM 55-1520-228-PMD
C3
URGENT
CHANGE
NO. 3
Headquarters
Department of the Army
Washington, D.C., 17 May 1985
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration
change is indicated by a miniature pointing hand.
Remove Pages
13 through 16
Insert Pages
13 through 16
2. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C3
By Order of the Secretary of the Army:
JOHN A. WICKHAM, JR.
General, United States Army
Chief of Staff
OFFICIAL:
DONALD J. DELANDRO
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM Maintenance Requirements for OH-58A and OH-58C Helicopter, Observation
TM 55-1520-228-PMD
C2
URGENT
CHANGE
NO. 2
Headquarters
Department of the Army
Washington, D.C., 30 March 1984
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below.
Remove Pages
7 through 18
19 and 20
Insert Pages
7 through 18.1/18.2
19 and 20
2. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing
hand.
3. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C2
By Order of the Secretary of the Army:
JOHN A. WICKHAM, JR.
General, United States Army
Chief of Staff
OFFICIAL:
ROBERT M. JOYCE
Major General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM Maintenance Requirements for OH-58 and OH-58C aircraft.
TM 55-1520-228-PMD
C1
URGENT
CHANGE
NO. 1
Headquarters
Department of the Army
Washington, D.C., 8 March 1982
OH-58A/C HELICOPTER
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
TM 55-1520-228-PMD, 8 August 1980, is changed as follows:
1. Remove and insert pages as indicated below.
Remove Pages
7 and 8
15 through 18
Insert Pages
7 and 8
15 through 18
2. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing
hand.
3. Retain this sheet in front of manual for reference purposes.
TM 55-1520-228-PMD
C1
By Order of the Secretary of the Army:
E. C. MEYER
General, United States Army
Chief of Staff
OFFICIAL:
ROBERT M. JOYCE
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION: To be distributed in accordance with DA Form 12-31, PM Maintenance Requirements for OH-58 and OH-58C aircraft.
TM 55-1520-228-PMD
LIST OF EFFECTIVE PAGES
Insert the latest changed pages in accordance with the instructions on the transmittal sheet.
NOTE: On a changed page, the portion of the text affected by the latest change is indicated by a vertical line in the outer margin of the
page. Changes to illustrations are indicated by a letter suffix adjacent to the identi.cation number. Added or completely revised
chapters, sections, paragraphs, tables, etc., are indicated by a vertical line by the title.
Dates of issue for original and change pages are:
Original . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 August 1980
Change 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 March 1982
Change 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 March 1984
Change 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 May 1985
Change 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 December 1986
Change 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 November 1987
Change 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 January 1988
Change 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 July 1989
Change 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 October 1989
Change 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 February 1991
Change 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 February 1992
Change 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 April 1992
Change 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 March 1994
Change 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 July 1997
Change 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 August 2005
Change 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 May 2009
Change 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 January 2011
TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 24, CONSISTING OF THE FOLLOWING:
Page No.
*Change No.
Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1 .................................................... 0
2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 .................................................... 0
*Zero in this column indicates an original page.
Page No.
*Change No.
5 .................................................... 0
6 .................................................... 0
7 .................................................... 8
8 .................................................... 2
9 .................................................... 8
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CHANGE 16 A
TM 55-1520-228-PMD
LIST OF EFFECTIVE PAGES (Cont)
Page No.
12
13
14
15
16
17
*Change No.
................................................... 0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
*Zero in this column indicates an original page.
B
Page No.
18
19
20
21
22
*Change No.
..................................................
..................................................
..................................................
..................................................
..................................................
16
15
15
15
15
CHANGE 16
*TM 55-1520-228-PMD
HEADQUARTERS
DEPARTMENT OF THE ARMY
Washington, D.C., 8 August 1980
OH–58A/C Helicopter
PREVENTIVE MAINTENANCE
DAILY INSPECTION CHECKLIST
GENERAL INFORMATION AND SCOPE
WARNING: CERTAIN INSPECTIONS ARE MANDATORY SAFETY-OF-FLIGHT REQUIREMENTS, AND THE INSPECTION INTERVALS CANNOT BE EXCEEDED. IN THE
EVENT THESE INSPECTIONS CANNOT BE ACCOMPLISHED AT DAILY INTERVAL,
THE AIRCRAFT CONDITION STATUS SYMBOL WILL BE IMMEDIATELY CHANGED
TO A RED X. THESE TYPE INSPECTION ITEMS ARE PRECEDED BY “MANDATORY
SAFETY-OF-FLIGHT INSPECTION ITEM.”
NOTE: INDIVIDUAL INSPECTION ITEMS CONTAINED IN THIS MANUAL ARE CONSIDERED THE MINIMUM REQUIREMENTS FOR PERFORMING A DAILY INSPECTION AND
MUST BE PERFORMED. THE CUMULATIVE EFFECTS OF INSPECTION DEFERRALS ARE
UNKNOWN AND COULD RESULT IN CATASTROPHIC FAILURE OR INCREASED MAINTENANCE AT A LATER DATE. THEREFORE, THE USE OF SPECIAL LETTERING TO EMPHASIZE CRITICAL INSPECTION IS NOT TO BE CONSTRUED AS AUTHORITY FOR DEFERRAL OF OTHER INSPECTIONS.
*This manual together with TM 55-1520-228-PM, 1 September 1978, supersedes TM 55-1520228-PMS, dated 24 September 1976, including all changes.
TM 55-1520-228-PMD
1
1. INSPECTION REQUIREMENTS. This manual contains complete requirements for daily inspection for OH-58 helicopters. It does
not contain instructions for repair, adjustment, or other means of rectifying conditions, nor does it contain instructions for troubleshooting
to find causes for malfunctioning. Specific tolerances, limits, etc.,
can be found in the applicable maintenance manuals. Use of the alphabetical index in the applicable manuals will facilitate locating the
required information.
2. MAINTENANCE ACTIVITIES. The inspections prescribed by
this manual will be performed at specified periods by Aviation Unit
Maintenance (AVUM) activities with assistance of Aviation Intermediate Maintenance (AVIM) and Depot activities when required.
3.
GENERAL INFORMATION.
a.
The inspection requirements contained herein are stated in
such a manner as to establish what and when certain equipment is
to be inspected and what conditions are desired/undesired. Compliance with the provisions outlined herein is required in order to assure
that proper servicing has been accomplished and latent defects are
discovered and corrected before malfunctioning or serious trouble
results. Inspection requirements are arranged, as nearly as possible, according to the manner in which they will be performed. The
requirements are divided into groups under area headings (figure 1).
b.
The inspection intervals designated herein will not be exceeded except in actual operational emergencies as explained here-
TM 55-1520-228-PMD
in. It is the commander’s responsibility to determine (on an individual aircraft basis) when inspection intervals may be exceeded. For
this purpose, operational emergencies are conditions of combat, or
conditions of disaster which necessitate flight to evacuate aircraft or
personnel. When aircraft are operated beyond the normal inspection
due-time because of such emergency situations, a circled red X status symbol and an appropriate statement (to include authority) must
be entered in blocks 16 and 17 of DA Form 2408-13-1 (Aircraft Inspection and Maintenance Record) until such time as the inspection
is complete. Since safety may be jeopardized when inspections are
delayed to meet emergency requirements, commander will ensure
that the aircraft status symbol reverts to a red “X” and that delayed
inspections are accomplished immediately upon termination of the
actual emergency. When unusual local conditions of environment,
utilization, mission, experience of flight crew and maintenance personnel, periods of inactivity, etc., are encountered, the maintenance
officer will, at his discretion, increase the scope and/or frequency of
maintenance or inspections as necessary to ensure safe flight.
c.
This manual may contain inspection requirements applicable to specific equipment not installed on your aircraft. Those requirements should be disregarded.
d.
DA Form 2408-13-1 will be used to record all deficiencies
or shortcomings discovered during the inspection.
e.
A 1-½ inch space between each area of inspection is being
provided to allow insertion of additional inspection items as required
by local command inspection procedures.
Change 14
2
4.
SPECIAL INSTRUCTIONS.
a.
A Preventive Maintenance Daily inspection is accomplished after the last flight of the day, or prior to the first flight on
the next day on which the aircraft is flown. The inspection consists
of visual examination and operational checks to determine that the
aircraft can safety and efficiently perform the assigned mission.
b.
Work time requirements to accomplish each inspection are
stated at top of the checklist.
5. REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS.
You can help improve this manual. if you find any
mistakes, or if you know a way to improve these procedures, please
let us know. Mail your letter or DA Form 2028 (Recommended
Changes to Publications and Blank Forms) located in the back of the
TM 55-1520-228-PMD
applicable aircraft maintenance manual, (when using the 2028 from
the maintenance manual, insure that the publication number and title
refer to this PMD) directly to: Commander, US Army Aviation and
Missile Command, ATTN: AMSAM-MMA-NP, Redstone Arsenal,
AL 35898-5000. A reply will be furnished to you. You may also
provide DA Form 2028 information to AMCOM via e-mail, fax, or the
World wide Web. Our fax number is : DSN788-6546 or Commercial
256-842-6546. Our e-mail address is: [email protected]
Instructions for sending an electronic 2028 may be found at the back
of the aircraft maintenance manual immediately preceding the hard
copy 2028. For the World Wide Web use: https://amcom2028.redstone.army.mil
6.
1.
INSPECTION AREAS.
Inspection areas are shown in figure
Change 14
3
Figure -1. Inspection Areas.
TM 55-1520-228-PMD
4
Table -1.
Area No. Nose Area
1
All surfaces and components in nose compartment
and on exterior ahead of crew doors.
Area No. Cabin Electrical Equipment
2
Shelf and landing Gear Area
(Right Side)
All surfaces, components, and equipment inside
cabin, and on cabin exterior between forward side
of crew doors and aft side of passenger doors and
cabin overhead. Includes complete landing gear
and fuel cells sumps and filler. All the equipment in
the area of the aft electrical equipment shelf.
Area No. Engine Area (Right Side)
3
All surfaces, components, and equipment
associated with engine installation, located above
engine work deck.
Area No. Aft Fuselage (Right Side)
4
All surfaces, components, below engine deck level,
between cabin area and tail boom attachment
bulkhead.
Area No. Aft Fairing and Oil Cooler
5
(Right Side)
All surface aft of engine cowling and oil tank.
Table -1.
TM 55-1520-228-PMD
— Continued
5
Table -1.
TM 55-1520-228-PMD
— Continued
Area No. Tail Boom
6
All surfaces, components, and equipment located
in the tail boom and vertical fin structure. Includes
tail rotor, horizontal stabilizer, and control linkages.
Also all supports, bearings, and shafting mounted
on tail boom.
Area No. Aft Fairing and Oil Cooler
7
(Left Side)
All surface aft of engine cowling, tail rotor drive
shaft and oil cooler blower.
Area No. Avionics and Aft Fuselage
8
Area (Left Side)
All surfaces, components, and equipment in
fuselage below engine deck level, between cabin
area and tail boom attachment bulkhead.
Area No. Engine Area (Left Side)
9
All surfaces, components, and equipment
associated with engine installation, located above
engine work deck.
Area No. Transmission and Pylon
10
Area
All surfaces, components, and equipment of the
main rotor pylon group, from top mast to cabin roof.
Includes main rotor, mast and rotating controls,
transmission with accessories and mounts, servo
actuators, and hydraulic system.
Area No. Cabin and Landing Gear
11
Area (Left Side)
All surfaces, components, and equipment inside
cabin, and on cabin exterior between forward side
of crew doors and aft side of passenger doors and
cabin overhead. Includes complete landing gear.
6
PREVENTIVE MAINTENANCE DAILY CHECKLIST
The Preventive Maintenance Daily Checklist will be accomplished following the last
flight of the day or prior to the first flight on the next day on which the aircraft is flown.
The inspection consists of visual examination and operational checks to determine
that the aircraft can safely and efficiently perform its assigned mission.
DAILY INSPECTION TOTAL WORK TIME: 2.3 Work Hours
Seq
No.
Item and Procedure
Seq
No.
NOSE AREA No. 1
1.6
1.1
Inspect aircraft forms and records for recorded discrepancies (DA PAM 738-751).
Landing lights, brackets, terminals and wiring for condition.
1.7
Landing/search light for damage and security.
1.2
Nose section exterior for visible damage.
1.8
UHF antenna for condition and security.
1.9
Vent system drain for obstructions, condition.
1.10
Chin bubbles for damage and cleanliness.
1.11
Windshields and windows for damage and cleanliness.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
1.3
Pitot tube and static ports for obstructions and cleanliness.
1.4
Forward proximity warning system antenna for condition and security.
1.5
Radar warning antennas for damage and security
Item and Procedure
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 8
7
Seq
No.
Item and Procedure
Seq
No.
1.12
WSPS Windshield Deflector for damage and security.
1.13
WSPS Lower Cutter Assembly for damage and security.
1.14
Breakaway Tip for looseness of play
CABIN AND LANDING
GEAR AREA No.2
(RIGHT SIDE)
2.1
Cabin exterior for damage.
2.2
Check fuel for water and other contamination. Drain
fuel sump (use sample jar) through the sump drain.
2.3
Landing gear for condition of skid tubes, cross tubes,
attachment fittings and skid shoes for evidence of hard
landing damage and security.
2.4
Radar altimeter antennas for damage and security.
2.5
Transponder antenna for damage and security.
2.6
Radar warning antenna for damage and security
(blade).
2.7
Marker beacon antenna for damage and security.
Item and Procedure
2.8
Crew and passenger doors for positive latching and
proper operation, windows and vents for cleanliness
and damage. Check hinges and condition of weather
stripping. Door posts for cracks.
2.9
Crew and passenger door jettison handles for proper
installation and breakaway safety wire.
2.10
Cabin interior for cleanliness, proper stowage of equipment and visible damage.
2.11
Nose section interior for cleanliness; equipment for
visible damage and loose connections.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
2.12
Anti-torque pedals for freedom of operation and security.
2.13
Current compass correction card for availability and
legibility.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 2
8
Seq
No.
Seq
No.
Item and Procedure
2.14
Instrument panel and instruments for security, condition and range markings.
2.15
FAT gauge for condition and security.
2.16
Check fuel valve handle-on (FWD) and off (AFT) then
on (FWD) for binding, proper operation, condition, and
security.
2.17
Overhead console for condition and security.
2.18
2.19
Item and Procedure
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
2.22
Cyclic control fro freedom of operation.
2.23
Cyclic, boots and grips for condition, security.
2.24
Copilot cyclic control for security of electrical connectors.
Utility light and wire for condition security, and proper
mounting.
2.25
Seat bottom for security, damage, and condition of
webbing and date of installation. Seat back cushions
for cleanliness and condition.
Heater control for condition and security.
2.26
Safety belts and shoulder harness for damage, corrosion, cuts, fraying, and security. Inertia reels for
damage, security, and positive locking and unlocking.
Safety belt mounting hinges and brackets for cracks
(visual). Check retarder springs for proper operation.
2.27
Armor panels for condition and security.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
2.20
Collective and power controls for freedom of operation.
2.21
Collective boots for condition, security and throttle set
screw.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 8
9
Seq
No.
Seq
No.
Item and Procedure
2.28
Fire extinguisher for designated location, presence of
inspection date tag, broken or missing seal, pressure
indicator in green, extinguisher and brackets secure.
2.29
First aid kits for designated location, presence
of inspection date tag, broken or missing seal,
completeness of side pocket contents, legible
identification markings, and security (refer to TM
55-1500-204-25/1).
2.30
Passenger seat and back cushions, retainer loops and
tabs for damage, condition and security.
2.31
Sound-proofing for condition, security, and cleanliness.
3.2.1
2.32
Aft electrical equipment shelf for unauthorized or foreign objects, cleanliness, and security of components.
3.3
Item and Procedure
ENGINE AREA No. 3
(RIGHT SIDE)
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
3.1
3.2
3.4
3.5
3.5.1
3.6
Engine air inlet bellmouth assembly through engine inlet fairing window for separation, cracking, deformation, security and obstructions and plenum area for
loose or foreign objects.
Particle separator for damage and particle ejection
opening for freedom of obstructions, and loose vortex
tubes (generators).
Inspection particle separator to induction fairing for fit
and sealing. Firewall to induction fairing for fit and
sealing.
Engine cowling and fairing for damage, security; and
condition of fasteners and hinges.
Anti-collision light for condition and security; loose
connections.
Engine mounts and engine mount fittings, for cracks,
damage and security.
Remove chip detector on freewheeling assembly and
check for metal particles and reinstall.
Fuel control linkage for damage and security.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 12
10
Seq
No.
3.7
Seq
No.
Item and Procedure
Compressor armor for condition and security.
3.12
Starter generator for condition, security. Exhaust duct
for condition, obstruction, and security.
3.13
Compressor, bleed valve for damage and obstruction.
Main input driveshaft coupling for evidence of overheating. Exterior plating for heat discoloration or blistering. Paint strips (if used) for discoloration.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
3.8
3.9
Bleed air elbows (2) for damage.
3.10
Engine, accessories, and connections for damage and
security.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
3.11
Item and Procedure
Exhaust stacks for damage, corrosion, obstructions,
and security. Exhaust stack clamp for cracks, corrosion, and security.
Inspect main rotor driveshaft 206-040-371 for damage
and fastener security.
AFT
FUSELAGE AREA No. 4
(RIGHT SIDE)
4.1
Fuel filler cap for proper locking and condition of seal,
security of lanyard.
4.1.1
If installed, inspect rubber pad below fuel receiver for
debonding.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 8
11
Seq
No.
Seq
No.
Item and Procedure
4.2
FM homing antenna for condition and security.
4.3
Battery and fuel vents for condition, obstruction,
proper positioning and security.
4.4
Air ducts for condition and security.
4.5
External power access door for condition and security.
4.6
Radar warning antennas for damage and security.
Item and Procedure
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
12
Seq
No.
Seq
No.
Item and Procedure
AFT FAIRING AND OIL
COOLER AREA No. 5
(RIGHT SIDE)
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
5.1
Engine oil tank for damage, security and servicing
lines for leaks and damage. Loose or missing identification tape on oil lines.
5.2
Oil filler access door for condition and security.
5.3
Engine external scavenge oil filter for damage, security, lines for leaks and damage, and bypass indicator (red button) in. Loose or missing identification tape on oil lines. After compliance with MWO
55-1520-228-50-44.
TAIL BOOM AREA No. 6
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
6.1
Tail boom exterior for visible damage.
6.2
Driveshaft cover for damage, security, and condition
of fasteners.
Item and Procedure
6.3
Long tail rotor drive shaft and bearings for evidence of
overheat; inspect slippage marks, excessive grease
leakage, bonded fittings for security, splined adapters
for freedom of movement. Do not wipe grease from
seal area. Inspection not required after compliance
with MWO 55-1520-228-50-25.
6.3.1
Check segmented driveshaft for condition, shaft coupling disc for distortion, cracks and security, splined
adapter from freedom of movement, and bearing and
driveshaft for evidence of over heating. Do not wipe
grease from seal area. Required after compliance with
MWO 55-1520-228-50-25.
6.4
Horizontal stabilizer for visible damage.
6.5
Navigation lights for condition and security.
6.6
VOR antennas for damage and security.
6.7
Tail light and support for damage and security.
6.8
Vertical stabilizer, tail skid, and antenna leads for security and damage.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
13
Seq
No.
Seq
No.
Item and Procedure
6.9
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
6.8.1
Inspect the inboard skin of the vertical fin for cracks
originating from the four attachment inserts. None allowed
Ballast installation for security and condition.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
6.10
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
6.8.2
Item and Procedure
Tail rotor controls for damage and security of attachment bolts.
Inspect the torque stripe and for cracks originating at
the attachment points for the vertical fin.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
14
Seq
No.
Item and Procedure
6.10.1
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
Tail rotor pitch links for cracks using ten-power magnification. Pay particular attention to area around ball
bearing at each end of pitch link. Suspected cracks
shall be confirmed by penetrant inspection.
6.11
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
Tail rotor gear box for security, oil level, condition, and
vent for obstruction. Check slight glass for cracks,
damage, and stains that might give a false indication
of the oil level.
6.12
6.12.1
6.12.2
Seq
No.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
Tail rotor hub and blade assembly for security and
damage.
Tail rotor blades for cleanliness and clean as required.
Inspect all self-locking nuts on the tail rotor blade and
hub assembly for cracks, damage and security.
6.13
Item and Procedure
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
Inspect both tail rotor blades for cracks on both sides
in the area approximately 7 inches outboard from the
butt end and 1.5 inches aft of the leading edge. If inspection reveals a crack, blade must be removed for
evaluation prior to next flight. Tail rotor blades with
serial number TLL-8000 and below require ten-power
magnification for the inspection and careful inspection
for corrosion and deterioration of clear coating on areas left clear for inspection. Not required after compliance with MWO 55-1520-228-50-25.
6.13.1
Inspect both tail rotor blades for cracks using a tenpower magnification, the skin surface area where the
root-end trailing edge balance weight is riveted (both
sides). If inspection reveals a crack, blade must be
removed prior to next flight.
6.14
Vulnerability reduction control system access panel for
damage and security.
VOR antenna for damage and security.
Horizontal stabilizer for visible damage
Navigation lights for condition and security.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
Inspect tail rotor blade tip blocks for cracks, debonding, loose, missing or corroded rivets.
6.15
6.16
6.17
6.18
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
15
Seq
No.
Seq
No.
Item and Procedure
AFT FAIRING AND
OIL COOLER AREA No. 7
(LEFT SIDE)
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
7.1
Engine oil tank for damage, security and servicing
lines for leaks and damage.
7.2
Oil cooler blower and drive shaft for damage, cracks,
and security. Blower air intake for foreign material and
clogging.
7.3
Aft fairing assembly for damage and condition of fasteners.
AVIONICS AND AFT No. 8
FUSELAGE AREA
(LEFT SIDE)
8.1
Aft proximity warning system antenna for damage and
security.
Item and Procedure
8.2
ADF sense antenna for damage and security.
8.3
ADF loop antenna for damage and security.
8.4
Avionics compartment door for condition, security,
proper operation.
8.5
Avionics compartment for loose or unauthorized
equipment.
(a) Inspect battery box installation AFT of station 120
for distortion or cracks in fuselage frames and adjacent
structure. After compliance with MWO 55-1520-22850-27 or MWO 55-1520-228-50-37.
(b) Inspect rack installation at and behind station 167
for distortion or cracks in fuselage frames and adjacent structure. After compliance with MWO 55-1520228-27 or MWO 55-1520-228-50-37.
8.6
Foam pad for condition, cleanliness, and security.
8.7
Battery for security and leakage.
8.8
External power receptacle for condition and security.
8.9
FM homing antennas for damage and security.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
16
Seq
No.
Seq
No.
Item and Procedure
ENGINE AREA No. 9
(LEFT SIDE)
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
9.1
Engine air inlet bellmouth assembly through engine inlet fairing window for separation, cracking, deformation, security and obstructions and plenum area for
loose or foreign objects.
9.2
Particle separator for damage and particle ejection
opening for freedom of obstructions.
9.3
Engine cowling and fairing for damage, security, and
condition of fasteners and hinges.
9.4
Engine mounts and engine mount fittings, for cracks,
damage and security.
9.5
Compressor armor for condition and security.
9.6
Airframe mounted fuel filter for condition, leaks and
security. After compliance with MWO 1-1520-228-5048.
9.7
Engine, accessories, and connections for damage and
security.
Item and Procedure
9.8
Linear actuator, linkage, and electrical lead for condition and security.
9.9
Engine automatic relight for condition and security.
9.10
Exhaust stacks for damage, corrosion, obstructions,
and security. Exhaust stack clamp for cracks, corrosion, and security.
9.11
Engine combustion chamber housing, turbine support
assembly and exhaust ducts for cracks, dents, burned,
or buckled areas.
9.12
Drain valve for leakage, security and contact with drive
shaft.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
9.13
Fuel nozzle and lines for security and leaks.
9.14
Forward tail rotor driveshaft for cleanliness, corrosion,
and freedom of movement on the splined adapters.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
17
Seq
No.
Seq
No.
Item and Procedure
TRANSMISSION AND
PYLON AREA No. 10
(LEFT SIDE)
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
Wipe clean yoke web section inner and outer surfaces.
If inspection by flashlight reveals a crack indication,
validate the crack indication using fluorescent penetrant. If crack is confirmed, remove yoke assembly
from service.
10.1
Main rotor hub assembly for damage and security.
10.2
Inspect main rotor blade attachment hardware for security, condition and evidence of cracks. Pay particular attention to blade bolt washers. If cracks are suspected, validate crack using florescent penetrate inspection.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
10.3
Check pillow blocks for mounting condition, security of
mounting bolts and slippage marks. If slippage has
occurred, replace hardware.
10.4
Static stops for damage and security.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
10.6
Main rotor blades for condition, damage, and security.
10.6.1
Main rotor blades for cleanliness and clean as required.
10.7
Main rotor blades for corrosion, specifically in the area
of the inertia weight retention screw holes. Tip cap firing for condition and security. Use a 10X power magnifying glass (scope) to inspect for cracks or evidence
of corrosion in the paint on the blade spar emanating
from inertia weight screw head area.
10.8
Check main rotor blades for protective coating, clean
blades and re-wax as required.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
10.5
Item and Procedure
Main rotor yoke assembly for cracks (visual) between
the pillow block bores and lower flange on inboard surfaces.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
10.9
Visible areas of mast for damage.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 16
18
Seq
No.
10.10
Seq
No.
Item and Procedure
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
Boot for damage and security.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
10.11
Swashplate, lever and sleeve, and connecting linkage
for security and visible damage. Swashplate support
base drain holes open and free of foreign matter.
NOTE
10.12.1 Main rotor pitch links for damage and security of attachment, tubes for corrosion and cracks; pay particular attention to swagged ends at jam nut.
10.13
Hydraulic servo actuator support assembly for cracks,
corrosion, security and damage.
10.14
Hydraulic system components and lines for security,
chafing, damage, leaks and reservoir for servicing.
Collective actuator bellcrank cover for missing rubber
flipper or flipper bond failure. Proper security of hydraulic reservoir cap and pin assembly (Refer to TM
55-1520-228-23-1).
10.15
Hydraulic filter element indicator for filter clogged indication.
10.16
Edges of main drive shaft cover assembly for evidence
of grease leakage. Security of attaching hardware.
Ensure swashplate is level for inspection of
outer-ring self-aligning bearings for main rotor
push-pull tubes.
MANDATORY SAFETY OF FLIGHT
INSPECTION ITEM
10.12
Item and Procedure
Cyclic and collective control linkage for security and
condition. Check for security of attachment bolts by
attempting to torque nuts with fingers (DO NOT REMOVE COTTER PIN).
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
19
Seq
No.
Item and Procedure
Seq
No.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
10.22
10.17
Power turbine governor (N2) linkage for freedom of
operation, security, and condition.
10.18
Sight glass for damage or stains which might give false
oil level indication.
10.19
Rotor tachometer generator, hydraulic pump, for condition and security.
10.20
Transmission oil cooler and duct for condition and security and obstruction.
10.21
Transmission oil filter and filter head for condition, security, and leaks.
10.21.1 Roof mounted transmission oil filter for damage, security, lines for leaks and damage, and bypass indicator (red button) in. After compliance with MWO
1-1520-228-50-51.
Item and Procedure
Pylon isolation mount cover for condition, drag pin assembly to static stop or cabin roof for foreign objects
and damage.
10.22.1 Wipe up oil spillage and clean area using cloth dampened with dry cleaning solvent. Wipe dry with clean
cloth. Visually examine clevis area and mount for
cracks, nicks, scratches, and loose or missing screws,
bolts, and cotter pins.
10.23
Inspect area under drag pin bearing for oil and water.
10.24
Inspect transmission deck area for dents, cracks,
holes, and overall condition.
10.25
Pylon support links for cracks, condition (visual) and
security of hardware.
10.26
Inspect electrical wiring for damage, security, and corrosion.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
20
Seq
No.
Item and Procedure
Seq
No.
MANDATORY SAFETY
OF FLIGHT
INSPECTION ITEM
10.33
FM No. 2 antenna for damage and security.
10.34
WSPS Upper Cutter Assembly for damage and security.
10.35
GPS antenna mounted on WSPS upper cutter assembly for damage and security. After compliance with
MWO 1-1520-228-50-53.
10.27
Transmission and connections for damage and security. Transmission for servicing (Filler cap for security).
10.28
Particle separator for damage and particle swirls for
condition and security.
10.29
Check security of engine cleaning provision tube and
cap assembly.
10.30
Transmission fairing for damage and condition of fasteners.
10.31
IFF antenna for damage and security.
10.32
Glide slope antenna for damage and security.
Item and Procedure
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
21
Seq
No.
Seq
No.
Item and Procedure
CABIN AND LANDING
GEAR AREA No. 11
(LEFT SIDE)
11.1
Item and Procedure
POWER ON
Landing gear for condition of skid tubes, cross tubes,
attachment fittings and skid shoes for evidence of hard
landing damage and security.
11.2
Crew and passenger doors for positive latching and
proper operation, windows and vents for cleanliness
and damage. Check hinges and condition of weather
stripping.
11.3
Seats for security, damage, and condition of webbing.
Cushions for cleanliness and condition and installation
date.
11.4
Armor plating for condition and security.
11.5
Crew and passenger door jettison handles for proper
installation and breakaway safety wire.
1.15
Pitot heater for operation.
1.16
Warning and caution panel lights for illumination on
test.
2.33
Interior and instrument panel lights for proper operation.
Assure defogging blower motors and free of
foreign debris prior to energizing motors.
2.34
All
Areas
Operate the defogging blower motors for a minimum
of 15 seconds to insure proper functioning.
Exterior lights for proper operation.
LUBRICATION
All
Areas
Service in accordance with TM 55-1520-228-23, applicable to the daily requirements.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION
TM 55-1520-228-PMD
Change 15
22
By Order of the Secretary of the Army:
E. C. MEYER
General, United States Army
Chief of Staff
OFFICIAL:
J.C. PENNINGTON
Major General, United States Army
The Adjutant General
DISTRIBUTION:
To be distributed in accordance with DA Form 12-31 PM Maintenance Requirements for OH-58 A and OH-58C aircraft.
TM 55-1520-228-PM
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION.
Change 15 23/(24 Blank)
PIN: 014141-000
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