TM-55-1510-220-CL

TM-55-1510-220-CL
TM 55-1510-220-CL
TECHNICAL MANUAL
Operator's and Crewmember's Checklist
ARMY MODEL
RC-12G AIRCRAFT
Pilot's Checklist
This copy is a reprint which includes
current pages from Change 1.
HEADQUARTERS,
DEPARTMENT OF THE ARMY
10 December 1985
TM 55-1510-220-CL
URGENT
NOTE:
THIS CHANGE HAS BEEN PRINTED AND
DISTRIBUTED OUT OF SEQUENCE.
IT
SHOULD BE INSERTED IN THE MANUAL
AND USED.
UPON RECEIPT OF THE
EARLIER SEQUENCED CHANGE ENSURE A
MORE CURRENT CHANGE PAGE IS NOT
REPLACED WITH A LESS CURRENT PAGE.
TM 55-1510-220-CL
C3
CHANGE
NO. 3
}
HEADQUARTERS
DEPARTMENT OF THE ARMY
WASHINGTON, D.C., 7 August 1992
Operator's and Crewmember's Checklist
ARMY MODEL
RC-12G AIRCRAFT
Pilot's Checklist
TM 55-1510-220-CL, 10 December 1985, 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
Insert pages
N-9 through N-14
N-9 through N-14
DISTRIBUTION STATEMENT A : Approved for public release;
distribution is unlimited.
URGENT
TM 55-1510-220-CL
C1
CHANGE
HEADQUARTERS
DEPARTMENT OF THE ARMY
WASHINGTON, D.C., 1 November 1990
NO. 1
Operator's and Crewmember's Checklist
ARMY MODEL RC-12G AIRCRAFT
Pilot's Checklist
TM 55-1510-220-CL, 10 December 1985, 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
Insert pages
E-23/E-24
E-23/E-24
2. Retain this sheet in front of manual for reference purposes.
By Order of the Secretary of the Army:
Official:
CARL E. VUONO
General, United States Army
Chief of Staff
PATRICIA P. HICKERSON
Colonel, United States Army
The Adjutant General
DISTRIBUTION:
To be distributed in accordance with DA Form 12-31-E,
block no. 1136, -10 & CL maintenance requirements for TM 551510-220-CL.
TM 55-1510-220-CL
GENERAL INFORMATION
AND SCOPE
SCOPE.
This checklist contains the operator's and
crewmember's checks to be accomplished during normal and
emergency operations
GENERAL INFORMATION . The checklist consists of three
parts normal procedures, emergency procedures, and
performance data. Normal procedures consist of the procedures
required for normal flight and those required for "Before
Landing". The normal procedures portion will be subdivided to
include the before landing checks of Chapter 8 of the Operator's
Manual Emergency procedures are subdivided into 7
classifications as follows engine, propeller, (prop), fire, fuel,
electrical (elect), landing and ditching (Idg/dtch), and flight
controls (fit cont) Performance data consists of performance
checks.
NOTE
This checklist does not replace the amplified
version of the procedures in the operator's manual
(TM 55-1510-220-10), but is a condensed version
of each procedure
NORMAL PROCEDURES PAGES. The contents of the normal
procedures of this manual are a condensation of the amplified
checklist appearing in the normal procedures, or crew duties
portion of the applicable operator's manual
EMERGENCY PROCEDURES PAGES. The requirements for
this section of the condensed checklist manual (CL) are identical
to those for the normal procedures, except that the information
is drawn from the amplified checks in the emergency procedures
i
TM 55-1510-220-CL
portion of the operator's manual The emergency requirements
are subdivided into the 7 classifications listed above Immediate
action items shall be underlined.
Symbols preceding numbered steps
* - Indicates performance of steps is mandatory for all "Thru
Flights"
N - Means performance of step is mandatory for "Night Flights".
- Indicates a detailed procedure for this step is included in the
Performance Checks section, located at the back of the
checklist.
I- Indicates mandatory check for "Instrument Flights".
O - Indicates if installed
(3) - Copilot duties. To be performed at pilots command.
Immediate action emergency items are underlined.
REPORTING ERRORS AND
RECOMMENDING IMPROVEMENTS.
You can help improve this manual. If you find any mistakes or if
you know of a way to Improve the procedures, please let us
know.
Mail your Letter, DA Form 2028 (Recommended
Changes to Publications and Blank Forms), or DA Form 2028-2
located in the back of the applicable Aircraft Operator's Manual
direct to Commander, US Army Aviation Systems Command,
ATTN AMSAV-MPSD, 4300 Goodfellow Blvd., St. Louis, MO
63120-1798. A reply will be furnished to you.
ii
TM 55-1510-220-CL
NORMAL PROCEDURES
BEFORE EXTERIOR CHECK
* 1. Publications - Check.
* 2. Oxygen system - Check.
* 3. Flight controls - Unlock and check.
* 4. Parking brake - Set.
5. Elevator trim - Set to "O" (neutral).
* 6. Gear- DN.
* 7. Ice vane pull handles - In.
* 8. Keylock switch - ON.
* 9. Battery switch - ON.
10. Ice vane switches - RETRACT.
11. Lighting systems - Check as required.
12. Pitot tubes (2), stall warning vane, heated fuel vents (2)
- Check.
13. Fuel gages - Check fuel quantity and gage operation.
14. Battery switch - As required.
15. Toilet - Check.
16. Emergency equipment - Check.
17. Mission equipment and circuit breakers - Check and set.
18. Parachutes - Check
N-1
TM 55-1510-220-CL
EXTERIOR CHECK
* FUEL SAMPLE
Check collective fuel sample from all drains for possible
contamination.
LEFT WING, AREA 1
1. Left wing area - Check.
LEFT MAIN LANDING GEAR
1. Left main landing gear - Check.
LEFT ENGINE AND PROPELLER
1. Left engine - Check
CENTER SECTION, LEFT SIDE
1. Center section - Check.
FUSELAGE UNDERSIDE
1. Fuselage underside - Check.
NOSE SECTION, AREA 2
1. Nose section - Check.
N-2
TM 55-1510-220-CL
CENTER SECTION, RIGHT SIDE
1. Center section - Check.
RIGHT ENGINE AND PROPELLER
1. Right engine and propeller - Check.
RIGHT MAIN LANDING GEAR
1. Right main landing gear - Check.
RIGHT WING, AREA 3
1. Right wing - Check.
FUSELAGE RIGHT SIDE, AREA 4
1. Fuselage right side - Check.
EMPENNAGE, AREA 5
1. Empennage - Check.
FUSELAGE, LEFT SIDE, AREA 6
1. Fuselage - Check.
N-3
TM 55-1510-220-CL
* INTERIOR CHECK
1. Cargo/loose equipment - Check secure.
2. Cabin/cargo doors - Test and lock.
3. Emergency exit - Check secure and key removed.
4. Mission cooling ducts - Check open and free of
obstructions.
5. Flare/chaff dispenser preflight test - Completed.
6. Crew briefing - As required.
BEFORE STARTING ENGINES
* 1. Oxygen system - Check as required.
2. Circuit breakers - Check In.
* 3. Overhead control panel switches - Set.
* 4. Fuel panel switches - Check.
5. Magnetic compass - Check.
* 6. Pedestal controls - Set.
* 7. Pedestal extension switches - Set.
8. Gear alternate engage and ratchet handles - Stowed.
9. Free air temperature gage - Check, note current
reading.
10. Instrument panel - Check and set.
11. PROP SYNC switch - OFF.
12. Mission panel switches and circuit breakers - Set and
OFF.
13. Pressurization controls - Set.
N-4
TM 55-1510-220-CL
14. Subpanels - Check and set as follows
15. Pilot's static air source - NORMAL
16. Pilot's and copilot's audio control panels - As required
17. Ice vane pull handles - In
18. Fuel pumps/crossfeed operation - Check
19. AC and DC GPU - As required
20. External power advisory annunciator lights - As required
21. DC power - Check (22 VDC minimum for battery, 28
maximum for GPU starts)
22. Annunciator panels - Test as required
23. Stall and gear warning system - Check
24. Fire Protection system - Check
25. INS - Align as required
* FIRST ENGINE START (BATTERY START)
1. Avionics master switch - OFF.
2. Exterior light switches - As required
3. Propeller - Clear
4. Ignition and engine start switch - ON
5. Condition lever (after N1 RPM stabilizes, 12% minimum)
- LOW IDLE
6 TGT and N1 - Monitor (TGT 10000C maximum, N 1 52%
minimum)
N-5
TM 55-1510-220-CL
7. Oil pressure - Check (60 PSI minimum)
8. Ignition and engine start switch - OFF, after 50% N1
9. Condition lever - HI IDLE
10. Generator switch - RESET, then ON
* SECOND ENGINE START (BATTERY START)
1. First engine generator load - 50% or less
2. Propeller - Clear
3. Ignition and engine start switch - ON
4. Condition lever (after N1 RPM passes 12% minimum) LOW IDLE
5. TGT and N1 - Monitor (TGT 1000°C maximum, N 1 52%
minimum)
6. Oil pressure - Check (60 PSI minimum)
7. Ignition and engine start switch - OFF after 50% N1
8. Battery charge light - Check
9. Inverter switches - ON, check INVERTER lights
extinguished
10. Second engine generator - RESET, then ON
11. Condition levers - As required
N-6
TM 55-1510-220-CL
ABORT START
1. Condition lever - FUEL CUTOFF
2. Ignition and engine start switch - STARTER ONLY
3. TGT - Monitor for drop in temperature
4. Ignition and engine start switch - OFF
ENGINE CLEARING
1. Condition lever - FUEL CUTOFF
2. Ignition and engine start switch - OFF (5 minute
minimum)
3. Ignition and engine start switch - STARTER ONLY (15
seconds minimum, 30 seconds maximum)
4. Ignition and engine start switch - OFF
* FIRST ENGINE START (GPU START)
1. INS - As required
2. Avionics master switch - As required
3. Exterior light switches - As required
4. Propeller- Clear
5. Ignition and engine start switch - ON
6. Condition lever (after
minimum) - LOW IDLE
N1,
RPM
stabilizes,
12%
7. TGT and N1 - Monitor (TGT 10000C maximum, N1 52%
minimum)
N-7
TM 55-1510-220-CL
8. Oil pressure - Check (60 PSI minimum)
9. Ignition and engine start switch - OFF after 50% N1
10. Condition lever- HI IDLE
11. DC GPU - Disconnect as required
12. Generator switch (GPU disconnected) - RESET, then
ON
* SECOND ENGINE START (GPU START)
1. Propeller- Clear
2. Ignition and engine start switch - ON
3. Condition lever (after N1 RPM passes, 12% minimum) LOW IDLE
4. TGT and N1 - Monitor (TGT 1000°C maximum, N1 52%
minimum).
5. Oil pressure - Check (60 PSI minimum)
6. Ignition and engine start switch - OFF, after TGT
stabilized
7. Propeller levers - FEATHER
8. GPU - Disconnect (Check aircraft external power and
mission external power light extinguished )
9. Propellers levers - HIGH RPM
10. Aircraft Inverter switches - ON, check #1 INVERTER
and #2 INVERTER annunciator lights extinguished
11. Generator switches - RESET, then ON
12. Condition levers - As required
N-8
TM 55-1510-220-CL
BEFORE TAXIING
* 1.
Brake deice - As required.
* 2.
Cabin temperature and mode - Set.
* 3.
AC/DC power - Check.
* 4.
Avionics master switch - ON.
5.
Mission panel - Set and checked as required.
6.
Electric elevator trim and autopilot/flight director
operation - Check.
* 7.
Autopilot trim fail system - Check.
8.
Avionics - Check and set as required.
9.
Flaps - Check.
10.
Altimeters - Check and set.
*TAXIING
1. Brakes- Check.
2. Flight instruments - Check for normal operation.
ENGINE RUNUP
1. Mission control panel - Set.
2. Propeller manual feathering - Check.
3. Autofeather - Check.
4. Overspeed Governors - Check.
5. Primary governors - Check.
6. Ice vanes - Check.
7. Condition levers - HI IDLE.
N-9
TM 55-1510-220-CL
8. Power levers - IDLE.
9. Anti-ice and deice systems - Check.
10. Pneumatic pressure - Check.
11. Pressurization system - Check.
12. Condition levers - As required.
13. Windshield anti-ice - As required.
* BEFORE TAKEOFF
(1) Autofeather switch - ARM.
(2) Bleed air valves - As required.
(3) Ice and rain switches - As required.
(4) panel - Check fuel quantity and switch positions.
(5) Flight and engine instruments - Check for normal
indications.
(6) Cabin altitude and rate-of-climb controller --Set.
(7) Annunciator panels - Check (note indications).
8. Propeller levers - HIGH RPM.
9. Flaps - As required.
10. Trim - Set.
11. Avionics - Set.
12. Flight controls - Check.
13. Departure briefing - Complete.
N-10
C3
TM 55-1510-220-CL
* LINE UP
(1) Transponder - As required.
(2) Engine autoignition switch - ARM.
3. Power
stabilized - Check
minimum.
approximately 25%
(4) Condition levers - LOW IDLE.
5. Lights - As required.
6. Mission control panel - Set.
AFTER TAKEOFF
1. Gear- UP.
2. Flaps - UP.
3. Landing lights - OFF.
4. Climb power - Set.
5. PROP SYNC switch - As required.
(6) Yaw damp - As required.
(7) Autofeather switch - As required.
(8) Brake de-ice - As required.
(9) Windshield anti-ice - As required.
10. Cabin pressurization - Check.
(11) Wings and nacelles - Check.
(12) Flare/chaff dispenser safety pin (electronic module)
Remove.
(13) Chaff function selector switch - As required.
N-11
C3
TM 55-1510-220-CL
CRUISE
1. Power - Set.
2. Ice and rain switches - As required.
(3) Auxiliary fuel gages - Monitor.
(4) Altimeters - Check.
(5) Engine instrument indications - Check.
6. Recognition lights - As required.
DESCENT - MAX RATE
(CLEAN)
(1) Cabin pressurization - Set.
2. Power levers - IDLE.
3. Propeller levers - HIGH RPM.
4. Flaps - UP.
5. Gear- UP.
6. Airspeed - Vmo.
(7) Ice and rain switches - As required.
8. Recognition lights - As required.
N-12
TM 55-1510-220-CL
DESCENT - MAX RATE (LANDING CONFIGURATION)
(1) Cabin pressurization - Set.
2. Power levers- IDLE.
3. Propeller levers - HIGH RPM.
4. Flaps - APPROACH.
5. Gear- DN.
6. Airspeed - 184 KIAS maximum.
(7) Ice & rain switches - As required.
8. Recognition lights - As required.
N-13
TM 55-1510-220-CL
DESCENT-ARRIVAL
(1) Cabin pressurization - Set.
(2) Ice and rain switches - As required.
(3) Windshield anti-ice - As required.
4. Recognition lights - ON.
5. Altimeters - Set to current altimeter setting.
(6) Flare/chaff dispenser arm-safe switch -SAFE.
(7) Flare/chaff dispenser safety pin (electronic module) Insert.
8. Crew briefing - Complete.
N-14
C3
U.S. GOVERNMENT PRINTING OFFICE: 1992-657-336
TM 55-1510-220-CL
BEFORE LANDING
1. Propeller synchronization switch -OFF.
(2). Autofeather switch - ARM.
3. Propeller levers - As required.
4. Flap switch (below 202 KIAS) - APPROACH.
5. Gear - DN.
6. Landing lights - As required.
(7). Brake deice - As required.
LANDING
1. Autopilot and yaw damp - Disengaged.
2. Gear down lights - Check three green.
3. Propeller levers - HIGH RPM.
TOUCH-AND-GO LANDINGS
(1). Propeller levers - HIGH RPM.
(2). Flaps - As required.
(3). Trim - Set.
4. Power stabilized - Check approximately 25% minimum
5. Takeoff power - Set
N-15
TM 55-1510-220-CL
GO-AROUND
1. Power - As required.
2. Gear - UP.
3. Flaps - UP.
4. Landing lights - OFF.
5. Climb power - Set.
(6). Yaw damp - As required.
(7). Brake deice - OFF
AFTER LANDING
(1). Condition levers - As required.
(2). Engine autoignition switch - OFF.
(3). Ice and rain switches - OFF.
(4). Flaps - UP.
(5). Transponder - As required.
6. Lights - As required.
(7). Mission control panel - Set.
N-16
TM 55-1510-220-CL
ENGINE SHUTDOWN
1. Brake deice - OFF.
2. Parking brake - Set.
3. Landing/taxi lights - OFF.
4. Cabin temperature mode selector switch - OFF.
5. Autofeather switch - OFF.
6. Vent and aft vent blower switches - AUTO.
7. INS - OFF.
8. Mission equipment - OFF, as required.
9. Inverter switches - OFF.
10. Battery condition - Check as required.
11. TGT - Check.
12. Propeller levers - FEATHER.
13. Condition levers - FUEL CUTOFF.
14. Exterior lights - OFF.
15. Master panel lights switch - OFF.
16. Avionics master switch - Off.
17. Master switch - OFF.
18. Keylock switch - OFF.
19. Oxygen system - OFF.
N-17
TM 55-1510-220-CL
BEFORE LEAVING AIRCRAFT
1. Wheels - Chocked.
2. Parking brake - As required.
3. Flight controls - Locked.
4. Overhead flood lights - Off.
5. Standby fuel pump switches - OFF.
6. Transponder - OFF.
7. Mode 4 - As required.
8. Emergency exit lock - As required.
9. Aft cabin light - OFF.
10. Door light - OFF.
11. Walk-around Inspection - Complete.
12. Aircraft forms - Complete.
13. Aircraft - secured.
N-18
TM 55-1510-220-CL
EMERGENCY PROCEDURES
NOTE
The urgency of certain emergencies requires
Immediate and Instinctive action by the pilot.
The most Important single consideration is
aircraft control. All procedures are subordinate
to this requirement.
ENGINE MALFUNCTION
Engine Malfunction Before Liftoff (Abort)
1. Power levers - IDLE.
2. Braking - As required.
(3). Condition levers - FUEL CUTOFF.
(4). Fire pull handles - Pull.
(5). Master switch - OFF.
E-1
TM 55-1510-220-CL
Engine Malfunction After Liftoff (Abort)
1. Power levers - Reduce.
2. Gear- DN.
3. Complete a normal landing.
NOTE
If able to land on remaining runway, check gear
down and use brakes and reverse thrust as
required.
If Insufficient runway remains for
stopping, perform the following.
(4). Condition levers - FUEL CUTOFF.
(5). Fire pull handles - Pull
(6). Master switch - OFF
Engine Malfunction After Liftoff (Flight Continued)
1. Power - Maximum allowable.
2. Gear - UP.
3. Flaps - UP.
4. Landing light - OFF.
5. Brake deice - OFF.
6. Engine cleanup - Perform.
E-2
TM 55-1510-220-CL
Engine Malfunction During Flight
1. Autopilot/yaw damp - DISENGAGE.
2. Power - As required.
3. Dead engine - Identify.
4. Power lever (dead engine) - IDLE.
5. Propeller lever (dead engine) - FEATHER.
6. Propeller synchronization switch - OFF.
7. Gear - As required.
8. Flaps - As required.
9. Power - Set for single engine cruise.
(10). Engine cleanup - Perform.
Engine Malfunction During Final Approach
1. Power - As required.
2. Gear - DN.
Engine Malfunction (Second Engine)
1 Airspeed - 140 KIAS.
2. Power lever - IDLE.
3. Propeller lever - Do not FEATHER.
4. Conduct engine restart procedure.
E-3
TM 55-1510-220-CL
Engine Shutdown In Flight
1. Power lever - IDLE.
2. Propeller lever- FEATHER.
3. Condition lever - FUEL CUTOFF.
(4). Engine cleanup - Perform.
Engine Cleanup
(1). Autoignition switch - OFF.
(2). Autofeather switch - OFF.
(3). Generator switch - OFF.
4. Propeller synchronization switch - OFF.
E-4
TM 55-1510-220-CL
Engine Restart During Flight Using Starter
(1). Cabin temperature mode selector switch - OFF.
(2). Electrical load - Reduce to minimum.
3. Fire pull handle - In.
4. Power lever - IDLE.
5. Propeller lever - FEATHER.
6. Condition lever - FUEL CUTOFF.
7. TGT (operative engine) - 700°C or less.
(8). Ignition and engine start switch - ON.
9. Condition lever - LOW IDLE.
10. TGT - Monitor (1,0000C for 5 seconds maximum).
11. Oil pressure - Check.
(12). Ignition and engine start switch - OFF at 50% N1.
(13). Generator switch - RESET, then ON.
(14). Engine cleanup - Perform If engine restart unsuccessful.
(15). Cabin temperature mode selector switch - As required.
(16). Electrical equipment - As required.
(17). Autoignition switch - ARM.
18. Propellers - Synchronize.
19. Power - As required.
E-5
TM 55-1510-220-CL
Engine Restart During Flight (Not Using Starter)
(1). Cabin temperature mode selector switch - OFF.
(2). Electrical load - Reduce to minimum.
(3). Generator switch (affected engine) - OFF.
4. Fire pull handle - Check in.
5. Power lever - IDLE.
6. Propeller lever - HIGH RPM.
7. Condition lever - FUEL CUTOFF.
8. Airspeed - 140 KIAS minimum.
9. Altitude below 20,000 feet - Check.
(10). Engine autoignition switch - ARM.
11. Condition lever - LOW IDLE.
12. TGT - Monitor (1,000°C for 5 seconds maximum).
13. Oil pressure - Check.
(14). Generator switch - RESET then ON.
(15). Engine Cleanup
unsuccessful.
-
Perform
If
engine
restart
(16). Cabin temperature mode selector switch - As required.
(17). Electrical equipment - As required.
(18). Autoignition switch - ARM.
19. Propellers - Synchronized.
20. Power - As required
E-6
TM 55-1510-220-CL
Low Oil Pressure
1. Oil pressure below 105 PSI below 21,000 feet or 85
PSI 21,000 feet and above, torque - 49% maximum.
2. 011 pressure below 60 PSI - Perform engine shutdown,
or land as soon as practicable using minimum power
to insure safe arrival.
Chip Detector Warning Light Illuminated
If a L CHIP DETR or a R CHIP DETR warning light illuminates,
and safe single-engine flight can be maintained, perform engine
shutdown
DUCT OVERTEMP CAUTION ANNUNCIATOR LIGHT
ILLUMINATED
(1). Cabin air control - In.
(2). Cabin temperature mode selector switch - AUTO.
(3). Cabin temperature control rheostat - Full decrease.
(4). Vent blower switch - HI.
(5). Cabin temperature mode selector switch - MAN COOL.
(6). Manual temperature switch - DECREASE (hold).
(7). Left bleed air valve switch - ENVIRO OFF.
(8). If the light Is still Illuminated after 30 seconds:
bleed air valve switch - OPEN.
(9). Right bleed air valve switch - ENVIRO OFF.
E-7
Left
TM 55-1510-220-CL
(10). If the light Is still Illuminated after 30 seconds: Right
bleed air valve switch - OPEN.
ICE VANE FAILURE
1. Airspeed - 160 KIAS or below.
(2). Ice vane control circuit breaker - Pull.
3. Ice vane - Operate manually.
4. Airspeed - Resume normal airspeed.
BLEED AIR SYSTEM FAILURE
Bleed Air Failure Light Illuminated
(1). Brake deice switch - OFF.
(2). TGT and torque - Monitor (note readings).
(3). Bleed air valve switch - PNEU & ENVIRO OFF.
(4). Cabin pressurization - Check.
Excessive Differential Pressure
(1). Cabin altitude and rate-of-climb controller.
higher setting.
Select
(2). If condition persists LEFT BLEED AIR VALVE switch ENVIRO OFF (light illuminated).
(3). If condition still persists RIGHT BLEED AIR VALVE
switch - ENVIRO OFF (light Illuminated).
4. If condition still persists - Descend Immediately.
(5). If unable to descend CABIN PRESS DUMP switch CABIN PRESS DUMP.
(6). Bleed air valve switches - OPEN, If cabin heating is
required.
E-8
TM 55-1510-220-CL
LOSS OF PRESSURIZATION (ABOVE 10,000 FEET)
1. Crew oxygen masks - 100% and on.
(2). Passenger masks - On and check.
CABIN DOOR CAUTION LIGHT ILLUMINATED
(1). Bleed air valve switches - ENVIRO OFF.
2. Descend below 14,000 feet as soon as practicable.
3. Oxygen - As required.
SINGLE-ENGINE DESCENT/ARRIVAL
(1). Cabin controller - Set.
(2). Ice and rain switches - As required.
3. Altimeters - Set.
4. Recognition lights - ON.
5. Arrival briefing - Complete.
E-9
TM 55-1510-220-CL
SINGLE-ENGINE BEFORE LANDING
1. Propeller lever - As required.
2. Flaps- APPROACH.
3. Gear- DN.
4. Landing lights - As required.
(5). Yaw damp - OFF.
(6). Brake deice - OFF.
SINGLE-ENGINE LANDING CHECK
1. Autopilot/yaw damp - Disengaged.
2. Gear lights - Check (three green).
3. Propeller lever (operative engine) - HIGH RPM.
SINGLE-ENGINE GO-AROUND
1. Power - Maximum allowable.
2. Gear- UP.
3. Flaps - As required.
4. Landing lights - OFF.
5. Power - As required.
(6). Yaw damp - As required.
E-10
TM 55-1510-220-CL
PROPELLER FAILURE (OVER 2080 RPM)
1. Power lever (affected engine) - IDLE.
2. Propeller lever - FEATHER.
3. Condition lever - As required.
(4). Engine cleanup - As required.
E-11/(E-12 Blank)
TM 55-1510-220-CL
FIRE
Engine/Nacelle Fire During Start or Ground Operations
1. Propeller levers - FEATHER.
2. Condition levers - FUEL CUTOFF.
3. Fire pull handle - Pull.
4. Push to extinguish switch - Push.
5. Master switch - OFF.
Engine Fire In Flight (Fire Pull Handle Light Illuminated)
1. Power lever - IDLE.
2. If fire pull handle light out is extinguished Advance
power.
3. If fire pull handle light Is still Illuminated Engine fire in
flight procedures (identified) - Perform.
Engine Fire In Flight (Identified)
1. Power lever - IDLE.
2. Propeller lever - FEATHER.
3. Condition lever - FUEL CUTOFF.
4. Fire pull handle - Pull.
5. Fire extinguisher - Actuate as required.
(6). Engine cleanup - Perform.
Fuselage Fire
1. Fight the fire.
2. Land as soon as possible.
E-13
TM 55-1510-220-CL
Wing Fire
1. Perform engine shutdown on affected side.
2. Land as soon as possible.
Electrical Fire
1. Crew oxygen - 100%.
(2). Master switch - OFF (visual conditions only).
3. All nonessential electrical equipment - OFF.
(4). Battery switch - ON.
(5). Generator switches (Individually) - RESET, then ON.
(6). Circuit breakers - Check for Indication of defective
circuit.
(7). Essential electrical equipment - On (individually until fire
source is Isolated).
8. Land as soon as practicable.
Smoke and Fume Elimination
1. Crew oxygen - 100% and ON.
(2). Bleed air valve switches - ENVIRO OFF.
(3). Vent blower switch - AUTO.
(4). Aft vent blower switch - OFF.
(5). Cabin temperature mode selector switch - OFF.
(6). If smoke and fumes are not eliminated. Cabin pressure
dump switch - CABIN PRESS DUMP.
7. Engine oil pressure - Monitor.
E-14
TM 55-1510-220-CL
FUEL SYSTEM
Fuel Pressure Warning Annunciator Light Illuminated
(1). Standby pump switch - ON.
(2). Fuel pressure warning annunciator light - Check
extinguished.
(3). If fuel pressure warning light Is still illuminated. Record
unboosted time.
No Fuel Transfer Caution Annunciator Light Illuminated
(1). AUX TRANSFER switch (affected side) - OVERRIDE.
(2). Auxiliary fuel quantity - Monitor.
(3). AUX TRANSFER switch (after respective auxiliary fuel
has completely transferred) - AUTO.
Nacelle Fuel Leak
1. Perform engine shutdown.
2. Fire pull handle - Pull.
3. Land as soon as practicable.
E-15
TM 55-1510-220-CL
Fuel Crossfeed
(1). AUX TRANSFER switches - AUTO.
(2). Standby pumps - OFF.
(3). Crossfeed switch - As required.
(4). Fuel crossfeed advisory annunciator light - Check
Illuminated
(5). Fuel pressure light extinguished - Check.
(6). Fuel quantity - Monitor.
Illumination of The #1 NAC LOW or #2 NAC LOW Caution
Annunciatorlight.
1. Twenty minutes fuel remaining - Confirm.
2. Land as soon as possible.
E-16
TM 55-1510-220-CL
ELECTRICAL SYSTEM
DC Generator Caution Annunciator Light Illuminated
(1). Generator switch - OFF, RESET, then ON.
(2). Generator switch (no reset) - OFF.
(3). Mission control switch - OVERRIDE.
(4).
Operating loadmeter - 100% maximum.
Both DC Generator Warning Annunciator Lights Illuminated
(1). All nonessential equipment - OFF.
(2). Land as soon as practicable.
Excessive Loadmeter Indication (Over 100%)
(1). Battery switch - OFF (monitor loadmeter).
(2). Loadmeter over
equipment OFF.
100%
-
Nonessential
electrical
(3). Loadmeter under 100% - BATT switch ON.
Inverter Caution Annunciator Light Illuminated
(1). Affected #1 INVERTER or #2 INVERTER switch - OFF.
INST AC Warning Annunciator Light Illuminated
1. N1 and TGT Indications - Check.
2. Other engine instruments - Monitor.
E-17
TM 55-1510-220-CL
Circuit Breaker Tripped
(1). BUS FEEDER breaker tripped - Do not reset.
(2). Nonessential circuit - Do not reset.
(3). Essential circuit - Reset once.
Battery Charge Caution Annunciator Light Illuminated
(1). Loadmeter - Check; note indication.
(2). Battery switch - OFF
(3). Loadmeter - Check If loadmeter indicates less that 2
5% change (one needle width), turn battery switch ON
and monitor for increasing load If load continues to
increase, turn battery switch OFF
(4) Battery switch (landing gear/flap extension only) - ON
E-18
TM 55-1510-220-CL
EMERGENCY DESCENT
1. Power lever - IDLE.
2. Propeller lever - HIGH RPM.
3. Flaps - APPROACH.
4. Gear - DN.
5. Airspeed - 184 KIAS maximum.
LANDING EMERGENCIES
Landing Gear Unsafe Indication
1. Gear - DN.
2. Gear lights - Check (three green).
(3). Landing gear relay circuit breaker - Check in.
Landing Gear Emergency Extension
1. Airspeed - 130 KIAS.
(2). LANDING GEAR RELAY circuit breaker - Out.
3. Gear handle - DN.
4. Landing gear alternate engage handle - Lift and turn
clockwise to the stop.
5. Alternate landing gear extension handle - Pump.
6. Gear lights - Check (three green).
E-19
TM 55-1510-220-CL
Gear-Up Landing (All Gear Up or Unlocked)
(1). Crew emergency briefing - Complete.
(2). Loose equipment - Stowed.
(3). Bleed air valves - ENVIRO OFF.
(4). Cabin pressure dump switch - CABIN PRESS DUMP.
(5). Cabin emergency hatch - Remove and stow.
6. Seat belts and harnesses - Secured.
7. Landing gear alternate engage handle - Disengaged.
8. Alternate landing gear extension handle - Stowed.
(9). Gear relay circuit breaker - In.
10. Gear - UP.
11. Nonessential electrical equipment - OFF.
12. Flaps - As required (DOWN for landing).
13. Power levers (runway assured) - IDLE.
(14). Condition levers - FUEL CUTOFF.
(15). Fire pull handles - Pull.
(16.). Master switch - OFF.
E-20
TM 55-1510-220-CL
Landing With Nose Gear Unsafe
(1). Crew emergency briefing - Complete.
(2). Loose equipment - Stowed.
(3). Bleed air valves - ENVIRO OFF.
(4). Cabin pressure dump switch - CABIN PRESS DUMP.
(5). Cabin emergency hatch - Remove and stow.
6. Seat belts and harnesses - Secured.
(7). Nonessential electrical equipment - OFF.
8. Power levers (runway assured) - IDLE.
(9). Condition levers - FUEL CUTOFF.
(10). Fire pull handle - Pull.
(11). Master switch - OFF.
E-21
TM 55-1510-220-CL
Landing With One Main Gear Unsafe
(1). Crew emergency briefing - Complete.
(2). Loose equipment - Stowed.
(3). Bleed air valve switches - ENVIRO OFF.
(4). Cabin pressure dump switch - CABIN PRESS DUMP.
(5). Cabin emergency hatch - Remove and stow.
6. Seat belts and harnesses - Secured.
(7). Nonessential electrical equipment - OFF.
8. Touchdown - On safe main gear first.
9. Power levers (runway assured) - IDLE.
(10). Condition levers - FUEL CUTOFF.
(11). Fire pull handle - Pull.
(12). Master switch - OFF.
CRACKED WINDSHIELD
External Crack
No action is required in flight.
Internal Crack
1. Descend to below 25,000 feet
(2). Cabin Pressure - Reset pressure differential to 4 PSI or
less within 10 minutes
E-22
TM 55-1510-220-CL
CRACKED CABIN WINDOW
1. Oxygen - As required.
2. Cabin pressurization - Depressurize.
3. Descend - As required.
DITCHING
(1). Radio calls/transponder - As required.
(2). Crew emergency briefing - As required.
(3). Bleed air valves - ENVIRO OFF.
(4). Cabin pressure dump switch - CABIN PRESS DUMP.
(5). Cabin emergency hatch - Remove and stow.
6. Seat belts and harnesses - Secured.
7. Gear - UP.
8. Flaps - DOWN.
(9). Nonessential electrical equipment - OFF.
10. Approach - Normal, power on.
(11). Emergency lights - As required.
E-23(E-24 Blank)
C1
TM 55-1510-220-CL
FLIGHT CONTROLS MALFUNCTION
Autopilot/Yaw Damper Emergency Disconnection:
The autopilot can be disengaged by any of the following
methods.
1. Pressing the DISC - TRIM - AP - YD disconnect switch
(control wheels).
2. Moving the autopilot engage-disengage switch (autopilot
mode selector control panel to the DIS position.
3. Pressing the go-around switch (left power lever), (yaw
damper will remain on).
4. Pulling the AP PWR and AFCS DIRECT circuit breakers
(overhead control panel).
5. Setting AVIONICS MASTER PWR switch (overhead
control panel) to the OFF position.
6. Setting aircraft MASTER switch (overhead control
panel) to the OFF position.
Unscheduled Rudder Boost Activation
(1). Rudder boost - OFF.
If condition persists
(2). Bleed air valve - PNEU & ENVIRO OFF.
3. Rudder trim - Adjust.
Unscheduled Electric Elevator Trim
1. Elevator trim switch - OFF.
(2). Elevator trim circuit breaker - Out.
E-25/(E-26 Blank)
TM 55-1510-220-CL
BAILOUT
1. Notify crew to prepare to ball out.
(2). Distress message - Transmit.
(3). Voice security - ZEROIZE.
(4). Transponder - 7700.
5. Flaps - DOWN.
6. Airspeed - 100 KIAS.
7. Trim - As required.
8. Autopilot - Engage.
(9). Cabin pressure switch - DUMP.
10. Parachute - Attach to harness.
11. Cabin door - Open.
12. Abandon the aircraft.
E-27/(E-28 Blank)
TM 55-1510-220-CL
PERFORMANCE CHECKS
PITOT TUBES (2), STALL WARNING VANE, HEATED FUEL
VENTS (2)
1. Stall warning heat switch - ON.
2. Pitot heat switches (2) - ON Check cover removed.
3. Fuel vent heat switches (2) - ON.
4. Left wing heated fuel vent - Check by feel for heat and
condition.
5. Stall warning vane - Check by feel for heat and
condition.
6. Left pitot tube - Check by feel for heat and free of
obstructions.
7. Right pitot tube - Check by feel for heat and free of
obstructions.
8. Right wing heated fuel vent - Check by feel for heat and
condition.
9. Stall warning heat switch - OFF.
10. Pitot heat switches (2) - OFF.
11. Heated fuel vent switches (2) - OFF.
P-1
TM 55-1510-220-CL
FIRE EXTINGUISHER PRESSURE
Temp°C
PSI
-40
190
to
240
-29
220
to
275
-18
250
to
315
-06
290
to
365
04
340
to
420
16
390
to
480
27
455
to
550
38
525
to
635
OXYGEN SYSTEM
1. Oxygen supply pressure gages - Check.
2. Supply control lever (green) - ON.
3. Diluter control lever - 100% OXYGEN.
4. Emergency control lever (red) - Set to TEST MASK
position while holding mask directly away from face,
then return to NORMAL.
5. Oxygen masks - Put on and adjust.
6. Emergency pressure control lever - Set to TEST MASK
position and check mask for leaks, then return lever to
NORMAL.
7. Flow indicator - Check During inhalation blinker
appears, during exhalation blinker disappears. Repeat a
minimum of 3 times.
P-2
48
605
to
730
TM 55-1510-220-CL
FUEL PUMPS/CROSSFEED
1. Fire pull handles - Pull.
2. Standby fuel pump switches - ON.
3. Battery switch - ON.
4. #1 fuel pressure and #2 fuel pressure warning lights Illuminated.
5. Fire pull handles - In.
6. #1 fuel press and #2 fuel press warning annunciator
lights - Extinguished.
7. Standby fuel pump switches - OFF.
8. #1 fuel pressure and #2 fuel pressure warning lights Illuminated.
9. Crossfeed - Check.
Check system operation by
activating switch momentarily left then right, noting that
#1 FUEL PRESS and #2 FUEL PRESS warning
annunciator lights extinguish and that the FUEL
CROSS-FEED advisory annunciator light illuminates as
switch is energized.
ANNUNCIATOR PANELS
1. MASTER CAUTION, MASTER WARNING, #1 FUEL
PRESS, #2 FUEL PRESS, GEAR DN, L BL AIR FAIL, R
BL AIR FAIL, INST AC, #1 DC GEN, #1 INVERTER, #1
NO FUEL XFR, #2 NO FUEL XFR, #2 INVERTER, #2
DC GEN, Check illuminated.
P-3
TM 55-1510-220-CL
2. ANNUNCIATOR TEST switch Press and hold Check
that the annunciator panels, FIRE PULL handle lights,
marker beacon lights, MASTER CAUTION and
MASTER WARNING lights are Illuminated. Release
switch and check that all lights except those in step 1
are extinguished.
3. MASTER CAUTION and MASTER WARNING lights Press Check that both lights extinguish.
STALL AND GEAR WARNING SYSTEM
1. STALL WARN TEST switch - TEST Check that warning
horn sounds.
2. LDG GEAR WARN TEST switch - TEST Check that
warning horn sounds and that the LDG GEAR CONTR
handle warning lights (2) Illuminate.
FIRE PROTECTION SYSTEM
1. Fire Detector Test switch - Rotate counterclockwise to
check three DETR positions FIRE PULL handles should
illuminate in each position. Reset MASTER WARNING
in each position.
2. Fire Detector Test switch - Rotate counterclockwise to
check two EXTGH positions.
SQUIB OK light,
associated #1 EXTGH DISCH and #2 EXTGH DISCH
annunciator caution light and MASTER CAUTION
LIGHT should illuminate in each position.
P-4
TM 55-1510-220-CL
ELECTRIC ELEVATOR TRIM AND AUTOPILOT/FLIGHT
DIRECTOR OPERATION
1. Pilot's and copilot's PITCH TRIM switches - Press to
NOSE UP and NOSE DN positions, singularly and in
pairs. Check that trim wheel moves in proper direction
and operates only when trim switches are pressed in
pairs. Any deviation requires that electric elevator trim
be turned off and flight conducted using manual trim.
2. DISC TRIM switch - Press to second detent and verify
that electric trim disconnects and ELEV TRIM
annunciator light (in pedestal) extinguishes.
3. Flight director (FDI) and Radio Magnetic Indicator (RMI)
warning flags - Check masked.
NOTE
Since the pressure of airflow that normally
opposes movement of control surfaces is absent
during preflight check, it is possible to get a hard
over control surface deflection if an autopilot
command is allowed to remain active for any
appreciable length of time. Move turn knob and
pitch thumbwheel only enough to check
operation, then return them to the center
position.
4. Autopilot mode selector panel - Select HDG mode.
5. Horizontal Situation Indicator (HSI) - Set heading
marker under lubber line.
6. Autopilot - Engage Check that controls are stiff and that
AP ENG, HDG, and AIL HI TORQUE annunciator lights
illuminate.
P-5
TM 55-1510-220-CL
7. AIL HI TORQUE test switch - Engage Check that AIL HI
TORQUE light extinguishes.
8. HSI heading marker - Move 10°left and right and verify
that flight director and control wheels respond in the
appropriate direction.
9. Autopilot/yaw damp disengage switch (control wheels) Press to first detent and verify that autopilot disengages
(AP DISC annunciator illuminates) and that flight
controls are free.
10. Autopilot - Engage.
11. Autopilot pitch-turn control (pedestal extension) Command 5°trim UP and verify that manual trim wheel
moves nose up and AP trim light indicates UP trim.
12. Pitch trim switch (control wheels) - Command nose
down and verify that autopilot disengages and AP TRIM
FAIL and MASTER WARNING annunciator lights
illuminate
NOTE
The AP TRIM FAIL annunciator will extinguish
by pressing the AP/YD disconnect button on the
control wheel to the second detent.
13. Repeat steps
commands.
9
thru
12
above
using
opposite
14. Autopilot- Engage.
15. HSI heading marker - Move to command a bank on
flight director Indicator.
16. GO-AROUND switch - Press and verify that GA
annunciator light illuminates, autopilot disengages, and
that flight director Indicator commands a wings-level 7°
nose-up attitude.
P-6
TM 55-1510-220-CL
17. TEST switch (pilot's flight director indicator) - Press and
verify that attitude display indicates an additional 10°
pitch up and 20°right roll, and GYRO flag is visible
AUTOPILOT TRIM FAIL SYSTEM
1. Autopilot - Engage Command DN on AP pitch wheel
and hold TRIM TEST switch when elevator trim wheel
starts to rotate.
2. Verify that autopilot disengages and AP TRIM FAIL and
MASTER WARNING lights illuminate within 10 seconds.
Repeat steps 1 and 2 using opposite commands.
PROPELLER MANUAL FEATHERING
1. Condition lever - LOW IDLE.
2. Left propeller lever - FEATHER Check that propeller
feathers.
3. Left propeller lever - HIGH RPM.
4. Repeat procedure for right propeller.
AUTOFEATHER
1. Condition levers - LOW IDLE.
2. Autofeather switch - Hold to TEST.
(#1 AUTOFEATHER
and
#2
AUTOFEATHER
advisory
annunciator lights should remain extinguished).
3. Power levers - Advance to approximately 22% torque,
then move autofeather switch to TEST Both #1
AUTOFEATHER and #2 AUTOFEATHER advisory
annunciator lights should illuminate.
P-7
TM 55-1510-220-CL
4. Left power lever - Retard.
a. At approximately 16 to 21% torque, check #2
AUTOFEATHER advisory annunciator extinguished.
b. At approximately 9 to 14% torque, check #1
AUTOFEATHER
advisory
annunciator
light
extinguished (Left propeller starts to feather).
5. Left power lever - Set approximately 22% torque.
6. Repeat steps 1 through 4 for right engine.
OVERSPEED GOVERNORS
1. Power levers - Set approximately 1950 RPM (both
engines).
2. #1 propeller governor test switch - Hold to TEST
position.
3. #1 propeller RPM 1830 to 1910 - Check.
4. Repeat steps 2 and 3 for # 2 engine.
5. Power levers - Set 1800 RPM.
PRIMARY GOVERNORS
1. Power levers - Set 1800 RPM.
2. Propeller levers - Move aft to detent. Check that
propeller RPM drops to 1600 to 1640 RPM
3. Propeller levers - HIGH RPM.
P-8
TM 55-1510-220-CL
ICE VANES
1. Ice vane switches - EXTEND Verify torque drop, TGT
increase, and #1 ICE VANE EXTEND and #2 ICE VANE
EXTEND annunciators illuminate.
2. Ice vane switches - RETRACT Verify return to original
torque and TGT, and that #1 ICE VANE EXTEND and
#2 ICE VANE EXTEND annunciators extinguish.
ANTI-ICE AND DEICE SYSTEMS
1. Windshield anti-ice switches - NORMAL and HI Check
PILOT and COPILOT (individually) for loadmeter rise,
then OFF.
2. Propeller switches - INNER and OUTER (momentarily)
Check for loadmeter rise.
3. Surface deice switch - SINGLE CYCLE AUTO. Check
for a drop in pneumatic pressure and wing deice boot
inflation and after 6 seconds for a second drop in
pneumatic pressure.
4. Surface deice switch - MANUAL Check that surface
boots inflate, and remain inflated, then OFF.
5. Antenna deice switch - SINGLE Check for a drop in
pneumatic pressure and antenna deice boot inflation.
6. Antenna deice switch - MANUAL Check that boots
inflate, and remain inflated, then OFF
P-9
TM 55-1510-220-CL
7. Engine Inlet lip heat switches - ON. Check that #1 LIP
HEAT ON and and #2 LIP HEAT ON advisory
annunciator lights are Illuminated, and the #1 LIP HEAT
and #2 LIP HEAT caution annunciator lights are
extinguished, then OFF.
8. Anti-ice and deice system switches - OFF
PNEUMATIC PRESSURE
1. Power levers - IDLE.
2. Left bleed air valve switch - PNEU & ENVIRO OFF.
3. Pneumatic pressure - Check 12 to 20 PSI.
4. Right pneumatic and environmental switch - PNEU &
ENVIRO OFF Check that L BL AIR FAIL and R BL AIR
FAIL annunciator lights , and L BLAIR OFF and R
BLAIR OFF annunciator lights are illuminated.
5. Pneumatic pressure - Verify zero.
6. Left pneumatic and environmental switches - OPEN.
Check that L BL AIR FAIL and R BL AIR FAIL
annunciator lights, and L BL AIR OFF and R BL AIR
OFF annunciator lights are extinguished.
7. Pneumatic pressure - Verify 12 to 20 PSI.
8. Right pneumatic and environmental switches - OPEN.
PRESSURIZATION SYSTEM
1. Cabin door caution light - Check extinguished.
2. Storm windows - Check closed.
3. Bleed air valve switches - Check OPEN.
P-10
TM 55-1510-220-CL
4. Cabin altitude - Set 500 feet lower than airfield
elevation.
5. Cabin pressure/dump switch - TEST (hold).
6. Cabin rate-of-climb gage - Check for descending
Indication and, when confirmed, release cabin
pressure/dump switch from TEST.
7. Aircraft altitude - Set to planned cruise altitude plus 500
feet. (If this setting does not result In a CABIN ALT
Indication of at least 500 feet over takeoff field pressure
altitude, adjust as required).
8. Rate control - Set between 9 and 12 o'clock.
CREW BRIEFING.
Crew introduction.
Equipment.
1. Personal to include ID tags.
2. Professional (medical equipment, etc.).
3. Survival.
Flight data.
1. Route.
2. Altitude.
3. Time enroute.
4. Weather.
Normal procedures.
1. Entry and exit of aircraft.
2. Seating and seat position.
P-11
TM 55-1510-220-CL
3. Seat belts.
4. Movement in aircraft.
5. Internal communications.
6. Security of equipment.
7. Smoking.
8. Oxygen.
9. Refueling.
10. Weapons and prohibited items.
11. Protective masks.
12. Toilet.
Emergency procedures.
1. Emergency exits.
2. Emergency equipment.
3. Emergency landing/ditching procedures.
DEPARTURE BRIEFING.
ATC clearance - Review.
1. Routing.
2. Initial altitude.
Departure procedure - Review.
1. SID.
2. Noise abatement procedure.
3. VFR departure route.
P-12
TM 55-1510-220-CL
Approach procedure - Review.
1. Approach plan/profile.
2. Altitude restrictions.
3. Missed approach.
a. Point.
b. Time.
c.
Intentions.
4. Decision height or MDA.
5. Lost communications.
Back up approach/frequencies.
Copilot duties - Review.
1. Nav/Com set-up.
2. Monitor altitude and airspeeds.
3. Monitor approach.
4. Call out visual/field in sight.
Landing performance data - Review.
1 Approach speed.
2 Runway required.
P-13
TM 55-1510-220-CL
Copilot duties - Review.
1. Adjust takeoff power.
2. Monitor engine instruments.
3. Power check at 65 knots.
4. Call out engine malfunctions.
5. Tune/ident all nav/com radios.
6. Make all radio calls.
7. Adjust transponder and radar as required.
8. Complete flight log during flight (note altitudes and
headings).
9. Note departure time.
PPC - Review.
1. Takeoff power.
2. Vr.
3.
Vy (climb to 500' AGL).
4. Vyse.
ARRIVAL BRIEFING.
Weather/altimeter setting.
Airfield/facilities - Review.
1. Field elevation.
2. Runway length.
3. Runway condition.
P-14
TM 55-1510-220-CL
By Order of the Secretary of the Army:
Official:
JOHN A. WICKHAM, JR.
General, United States Army
Chief of Staff
MILDRED E. HEDBERG
Brigadier General, United States Army
The Adjutant General
DISTRIBUTION:
To be distributed in accordance with DA Form 12-31, -10
& CL Maintenance requirements for RC-12D Airplane,
Reconnaissance.
*GPO: 1994 0 - 382-492
THE METRIC SYSTEM AND
EQUIVALENTS
Linear Measure
1 centimeter = 10 millimeters = .39 inch
1 decimeter = 10 centimeters = 3.94 inches
1 meter = 10 decimeters = 39.37 inches
1 dekameter = 10 meters = 32.8 feet
1 hectometer = 10 dekameters - 328.08 feet
1 kilometer = 10 hectometer - 3280.8 feet
Weights
1 centigram = 10 milligrams = .15 grain
1 decigram = 10 centigrams = 1.54 grains
1 gram = 10 decigrams = .035 ounce
1 dekagram = 10 grams = .35 ounce
1 hectogram = 10 dekagrams = 3.52 ounces
1 kilogram = 10 hectograms = 2.2 pounds
1 quintal = 100 kilograms = 220.46 pounds
1 metric ton = 10 quintals = 1.1 short tons
Liquid Measure
1 centiliter = 10 milliliters = .34 fl. ounces
1 deciliter = 10 centiliters = 3.38 fl. ounces
1 liter = 10 deciliters = 33,81 fl. ounces
1 dekaliter = 10 liters = 2.64 gallons
1 hectoliter = 10 dekaliters = 26.42 gallons
1 kiloliter = 10 hectoliters = 264,18 gallons
PIN: 058973-000
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