TM-1-1520-236-CL

*TM 1-1520-236-CL
TECHNICAL MANUAL
OPERATOR AND
CREWMEMBER CHECKLIST
ARMY MODEL
AH-1P (PROD)
AH-1E (ECAS)
AH-1F (MODERNIZED COBRA)
HELICOPTERS
Approved for public release; distribution is unlimited.
*This manual supersedes TM 55-1520-236-CL, dated
3 January 1980, including all changes.
HEADQUARTERS,
DEPARTMENT OF THE ARMY
26 JANUARY 2001
TM 1-1520-236-CL
GENERAL INFORMATION AND SCOPE
SCOPE. This checklist contains the operators and crewmembers 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. Emergency procedures are subdivided into 10 classifications as follows: engine, rotor/transmission/drive system, fire, fuel, electrical
(Elect) system, hydraulic (Hyd), landing and ditching (Ldg/
Dtch), flight controls (Flt Cont), and mission equipment
(MSN/EQPT) (as applicable).
NOTE
This checklist does not replace the amplified version of the procedures in the operators manual
(TM 1-1520-236-10), 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 operators 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 portion of the operators manual.
The emergency requirements are subdivided into the 10
classifications listed above.
i
TM 1-1520-236-CL
Performance Checks. This section contains expanded
armament checks and engine starting procedures.
Symbols Preceding Numbered Steps.
*
––
Indicates performance of steps is mandatory
for all “Thru Flights”.
––
Indicates a detailed procedure of this step is
included in the Performance Checks section,
located at the back of the checklist.
(O)
––
Indicates if installed.
Immediate action emergency items are underlined for your
reference and must be committed to memory.
Reporting of 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 or DA
Form 2028 (Recommended changes to Publications and
Blank Forms) directly to: Commander, U.S. Army Aviation
and Missile Command, ATTN: AMSAM-MMC-LS-LP, Redstone Arsenal, AL 35898-5230. You may also submit your
recommended changes by E-Mail directly to [email protected] or by fax 256-842-6546/DSN 788-6546. A
reply will be furnished directly to you. Instructions for sending an electronic 2028 may be found at the back of TM
1-1520-236-10.
ii
TM 1-1520-236-CL
NORMAL PROCEDURES
CREW BRIEFING.
The following is a guide that should be used in accomplishing required crew briefing. Items that do not pertain to a
specific mission may be omitted.
1.
Mission.
a. Mission brief.
b. NBC operations.
c. ASE equipment and use.
d. Actions on contact.
2.
Weather.
Inadvertent IMC.
3.
Flight route.
a. Doppler.
b. Time enroute.
c. Altitude and techniques of movement.
4.
Performance data.
5.
Emergency actions.
a. Immediate action steps.
b. Mayday call.
c. Egress procedures.
d. Rendezvous points.
e. Emergency equipment.
6.
Crew duties and responsibilities.
a. Transfer of
emergency).
controls
(normal
b. Area of scan responsibilities.
N-1
and
TM 1-1520-236-CL
7.
Pilot on the controls.
a. Positive aircraft control (Primary focus
outside).
b. Avoid traffic and obstacles.
c. Announce all actions.
8.
Pilot not on the controls.
a. Announce traffic and obstacles.
b. Navigate.
c. Copy all required information.
d. Perform other duties as assigned.
e. Announce focusing “in and out of the
cockpit”.
f.
9.
Acknowledge intentions.
Both crewmembers.
a. Cross check instruments and systems.
b. Tune radios as required.
c. Most conservative action.
d. Two challenge rule.
10.
Armament porcedures.
a. Target priority.
b. Target handoff.
c. Ammo load.
11.
NVG considerations.
12.
Refueling operations.
13.
Required equipment.
14.
Additional information/questions.
N-2
TM 1-1520-236-CL
HELICOPTER AND SYSTEMS
BEFORE EXTERIOR CHECK
Warning
Do not preflight until armament systems are
safe.
(O)
1.
Wing ejector rack — Jettison safety pins
installed.
2.
TOW launcher — Missile arming levers up.
3.
Rocket launchers — Igniter arms in contact
with rockets.
4.
W2P1 — Disconnected.
5.
JETTISON SELECT switches — OFF.
6.
TURRET STOW, ADS, FCC circuit breakers
and TURRET DRIVE MOTOR switch —
OUT/OFF.
7.
CHAFF DISP CONT switch — SAFE.
8.
Canopy removal arming/firing mechanism
safety pins — IN.
9.
Publications — Check.
10.
BATTERY switch — START.
11.
NON-ESNTL BUS switch — MANUAL.
12.
Lights — Check if use is anticipated.
13.
BATTERY switch — OFF.
14.
Pilot’s HSS linkage assembly — Check.
15.
Area behind pilot seat — Check.
N-3
TM 1-1520-236-CL
16.
Both map lights — OFF.
17.
Canopy — Check.
EXTERIOR CHECK
AREA 1 — FUSELAGE AND MAIN ROTOR
1.
Fuel — Check.
2.
Fuel sample — Check as required.
3.
Main Rotor Blade — Check.
4.
Fuselage — Check.
5.
Ammunition bay (right side) — Check.
6.
Hydraulic compartment — Check.
7.
Landing gear — Check.
8.
Area beneath transmission — Check.
9.
Wing — Check.
(O) 10.
TOW — Check.
(O) 11.
Rocket launcher — Check.
12.
Engine and transmission
Secure open.
13.
Transmission area — Check.
14.
Pylon area — Check.
15.
Swashplate and support — Check.
16.
Main rotor system/root end fitting inboard
surface — Check.
17.
Particle separator and scavenge ejector —
Check.
N-4
cowlings
—
TM 1-1520-236-CL
18.
Engine compartment — Check and close
cowlings.
19.
Fuselage — Check.
AREA 2 — TAIL SECTION — RIGHT SIDE
1.
Tailpipe/IR duct assembly — Check.
2.
Electrical compartment — Check.
3.
Right side tailboom — Check.
4.
42 degree gearbox — Check.
5.
Main rotor blade — Check.
6.
Tail rotor — Check.
AREA 3 — TAIL SECTION — LEFT SIDE
1.
90 degree gearbox — Check.
2.
Left side tailboom — Check.
3.
Oil cooler compartment — Check.
AREA 4 — FUSELAGE — LEFTSIDE
1.
2.
Engine and transmission cowling —
Secure open and check.
Particle separator — Check.
3.
Tail rotor drive shaft — Check.
4.
Transmission area — Check.
5.
Swashplate and support — Check.
6.
Drive links — Check.
7.
Top of pylon — Check.
N-5
TM 1-1520-236-CL
8.
Main rotor system — Check.
9.
Engine and transmission cowling — Close.
10.
Wing — Check.
(O) 11.
TOW — Check.
(O) 12.
Rocket launcher — Check.
13.
Area beneath transmission — Check.
14.
Landing gear — Check.
15.
Lower fuselage — Check.
16.
Hydraulic compartment — Check.
17.
Canopy – Check (If single pilot — perform
checks in paragraph 8-20).
18.
Fire extinguisher — Check.
19.
Gunner’s HSS linkage assembly — Check.
20.
Map light — OFF.
21.
Fuselage — Check.
22.
Static port — Check.
23.
Ammunition bay (left side) — Check.
AREA 5 — NOSE SECTION
1.
Turret — Check.
2.
Windshield and rain removal nozzles —
Check.
WALK
AROUND CHECK
1.
Cowling, doors, and panels — Secure.
N-6
TM 1-1520-236-CL
(O)
(O)
2.
Covers, tiedowns, grounding cables, wing
store, chaff dispenser safety pin and AIM-1/
EXL warning flag — Remove and rotate main
rotor.
3.
TOW launchers missile arming levers —
Check down.
4.
W2P1 — Connect.
5.
Crew briefing — Completed.
BEFORE STARTING ENGINE — GUNNERS STATION
1.
ENG DE-ICE switch — OFF.
2.
GOV switch — AUTO.
3.
EMER HYDR PUMP switch — OFF.
4.
JTSN SEL — As desired.
5.
WING STORES JETTISON switch — Cover
down and locked wired.
6.
Avionics — As desired.
7.
Systems/flight instruments — Check.
8.
Attitude indicator — Caged and locked.
9.
Standby compass — Check.
10.
PLT ORIDE switch — OFF.
11.
TUR SLEW switch — NORM.
12.
LASER SAFE/TURRET DEPR limit switch
— DEPR limit.
13.
SHC ATS switch — STOW.
14.
TCP MODE SELECT switch — OFF.
N-7
TM 1-1520-236-CL
15.
TCP TSU RTCL switch — OFF.
16.
Canopy removal arming/firing mechanism
safety pin — Remove and stow (if occupied).
17.
Seat belt and shoulder harness — Check.
BEFORE STARTING ENGINE — PILOT STATION
1.
IGNITION switch — ON.
2. FAT indicator — Check.
3.
Collective friction and lock — OFF.
4.
AC circuit breaker panel — As desired.
5.
BATTERY switch — START.
6.
RPM switch — OFF.
7.
GEN switch — OFF.
8.
ALTNR switch — OFF.
9.
NON ESNTL bus switch — As desired.
10.
FORCE TRIM switch — FORCE TRIM.
11.
HYD TEST switch — Centered.
12.
FUEL switch — ON (both boost pump
caution lights out).
13.
ENG OIL BYP switch — AUTO.
14.
ENG DEICE switch — OFF.
15.
GOV switch — AUTO.
16. SCAS POWER — OFF.
17. CODE HOLD switch — OFF.
18. EMER HYDR PUMP switch — OFF.
N-8
TM 1-1520-236-CL
19.
Systems/flight instruments — Check.
20.
MASTER CAUTION and RPM WARNING
lights — Check illuminated.
21.
Caution panel lights — TEST and RESET.
22.
HUD — OFF; check condition.
23.
FIRE DET TEST switch — TEST.
24.
Altimeter — Set.
25. Radar altimeter — OFF.
26. Clock — Set.
(O)
27. Low G Warning light — Press test.
28. HEAT/VENT AIR PULL knob — Out.
29. Avionics/mission equipment — OFF; set as
desired.
30. COMPASS switch — MAG.
31.
LTS panel switches — Set.
32. ECS panel switches — Set.
33.
DC circuit breakers — In.
34.
Canopy removal arming/firing mechanism
safety pin — Remove and stow.
STARTING ENGINE
1.
GPU — Connect if GPU starting. A minimum
of 22 volts is required for battery start.
2.
Fireguard — Posted if available.
3.
Rotor blades — Check clear.
4.
Throttle — Check and set.
N-9
TM 1-1520-236-CL
5.
Engine — Start.
6.
GEN switch — ON.
7.
GPU — Disconnected.
8.
BATTERY switch — RUN.
9.
Engine and transmission oil pressures —
Check.
10.
Caution lights — Check off (ALTNR and
RECT lights are ON).
11.
Ammeter — Check less than 200 amps.
12.
Turret stowed check — Perform.
13.
Gunnery Checklist — Perform if applicable.
ENGINE RUNUP
1.
Avionics/mission equipment — On as
desired.
2.
SCAS POWER switch — POWER. Check
NO-GO lights extinguish prior to 30 seconds.
3.
Ammo doors — Closed.
4.
Canopy doors — Secure.
5.
Throttle — 100%.
6.
ALTNR switch — ON (ALTER and RECT
lights out).
7.
ENG DEICE switch — Check.
8.
Fuel quantity — Check.
9.
Engine and Transmission instruments —
Check.
10.
DC voltmeter — Check.
N-10
TM 1-1520-236-CL
11.
Pitot heater — Check.
12.
SCAS — Check.
13.
TURRET DRIVE MOTOR switch — TURRET.
14.
ADS PWR circuit breaker — IN.
15.
FCC switch — FCC.
16.
RMS control panel — Set.
17.
MASTER ARM switch — STBY.
18.
WPNS CONTR switch — Gunner.
19.
RECOIL COMPEN switch — OFF (ON for
live fire).
20.
HUD PWR switch — STBY.
21.
TCP switch — STBY TOW.
22.
CN FLIR control panel OFF/ON/BIT
switch — ON.
23.
Avionics/mission equipment — Check and
set.
24.
Altimeters — Set.
25.
HSI heading — Set.
26.
ADI — Set. Gunner attitude indicator uncage
and set.
27.
HUD PWR switch — ON.
28.
Armament-Systems — Check.
29.
Health Indicator Test (HIT) — Check; perform as required.
N-11
TM 1-1520-236-CL
BEFORE
TAKE OFF CHECK
1.
TOW launchers — Missile arming levers
down.
2.
Wing ejector rack jettison safety pins — Removed.
3.
RPM — 100 percent.
4.
Systems — Check.
5.
TCP switch — TSU/GUN.
6.
TURRET
TURRET
7.
Avionics, armament and other mission
equipment — Set as desired.
HOVER
DRIVE
MOTOR
switch
—
CHECK
1.
Flight controls — Check.
2.
Engine and transmission instruments —
Check.
3.
Flight instruments — Check.
4.
Hover power check — Perform.
BEFORE LANDING
1.
MASTER ARM switch — STBY.
STBY light is illuminated.
Verify
2.
TURRET DRIVE MOTOR switch — OFF.
Verify GUN ELEV STOWED light is
illuminated.
3.
Avionics and mission equipment — Set as
required.
ENGINE SHUTDOWN
1.
FORCE TRIM switch — FORCE TRIM.
N-12
TM 1-1520-236-CL
2.
TCP switch — OFF.
3.
HUD night filter — DAY position.
4.
HUD PWR switch — OFF.
5.
FCC switch — OFF.
6.
ADS PWR circuit breaker — Out.
7.
TURRET STOW circuit breaker — Out.
8.
Throttle — Reduce to idle. Allow TGT to
stabilize for two minutes.
9.
MASTER ARM switch — OFF.
10.
TUR SLEW switch — GND TEST.
11.
LASER SAFE/TURRET DEPR LIMIT switch
— DEPR LIMIT.
12.
HSS LINKAGE — STOW.
13.
SCAS POWER switch — OFF.
14.
Gunnery Checklist — Perform if applicable.
15.
Engine, transmission, and electrical indications — Check.
16.
Avionics and other missions equipment —
OFF.
17.
ECS panel switch — OFF.
18.
Lights — Set as required.
19.
Gunner’s attitude indicator — Cage.
20.
Throttle — Off.
21.
FUEL switch — OFF.
22.
ALTNR switch — OFF RESET.
N-13
TM 1-1520-236-CL
23.
GEN switch — OFF.
24.
BATTERY switch — START.
25.
IGNITION switch — As required.
26.
Canopy removal arming/firing mechanism
safety pins — In.
27.
Collective friction and lock — ON.
28.
BATTERY switch — OFF.
BEFORE LEAVING HELICOPTER
1.
Walk around — Perform.
2.
Mission equipment — Secure.
3.
Wing ejector rack jettison safety pins —
Installed.
4.
TOW missile arming lever — Up.
5.
Rocker igniter arms — In contact with rockets.
6.
Chaff dispenser system safety pin — Insert.
7.
AIM-1/EXL aiming light protective covering/
warning flag — Installed.
8.
Forms and Records — Complete.
9.
Helicopter — Secure.
N-14
TM 1-1520-236-CL
EMERGENCY PROCEDURES
ENGINE
AUTOROTATE
1. Collective — Adjust.
2. Pedals — Adjust.
3. Throttle — Adjust.
4. Airspeed — Adjust.
(O)
5. Wingstores — Jettison.
EMER SHUTDOWN
1. Throttle — Off.
2. FUEL switch — OFF.
3. BATTERY switch — OFF.
EMER GOV OPNS
1. GOV switch — EMER.
2. Throttle — Adjust.
3. LAND AS SOON AS POSSIBLE.
ENGINE MALFUNCTION — HOVER
AUTOROTATE
ENGINE
MALFUNCTION
—
LOW
ALTITUDE/LOW AIRSPEED OR CRUISE
1. AUTOROTATE.
2. EMER GOV OPNS.
E-1
TM 1-1520-236-CL
ENGINE MALFUNCTION — 120 KIAS AND
ABOVE
1. CYCLIC — Adjust.
2. AUTOROTATE.
3. EMER GOV OPNS.
DROOP COMPENSATOR FAILURE
EMER GOV OPNS
ENGINE COMPRESSOR STALL
1. Collective — Reduce.
2. All bleed air — OFF.
3. Land as soon as possible.
INLET GUIDE VANE ACTUATOR FAILURE
LAND AS SOON AS PRACTICABLE.
ENGINE OVERSPEED
1. Collective — Increase.
2. Throttle — Reduce.
3. EMER GOV OPNS.
ENGINE OIL TEMPERATURE HIGH
LAND AS SOON AS POSSIBLE.
E-2
TM 1-1520-236-CL
ROTOR, TRANSMISSION, AND DRIVE
SYSTEM
TAIL ROTOR FAILURE — FLIGHT
LOSS OF THRUST/COMPONENTS
AUTOROTATE.
TAIL ROTOR FAILURE — HOVER
1. Throttle — Reduce.
2. AUTOROTATE.
MAIN DRIVESHAFT FAILURE
1. AUTOROTATE.
2. Throttle — Off.
CLUTCH FAILS TO DISENGAGE
1. Throttle — On.
2. LAND AS SOON AS POSSIBLE.
CLUTCH FAILS TO RE-ENGAGE
1. AUTOROTATE.
2. Throttle — Off.
FIRE
FIRE — ENGINE START
1. Starter switch — Press.
2. Throttle — Off.
3. FUEL switch — OFF.
E-3
TM 1-1520-236-CL
FIRE — GROUND (Pilot’s Station)
EMER SHUTDOWN
FIRE — GROUND (Gunner’s Station)
1. IDLE STOP — RELEASE and hold.
2. Throttle — Off.
3. EMER ELEC PWR switch — EMERG OFF.
FIRE — FLIGHT (Power - ON)
1. LAND AS SOON AS POSSIBLE.
2. EMER SHUTDOWN.
FIRE — FLIGHT (Power - OFF)
1. AUTOROTATE.
2. EMER SHUTDOWN.
ELECTRICAL FIRE — FLIGHT
1. BATTERY switch — START.
2. Electrical switches — OFF.
3. NON–ESNTL BUS switch — NORMAL.
4. LAND AS SOON AS POSSIBLE.
5. EMER SHUTDOWN.
FUMES FROM ECS
1. ECU switch — OFF.
2. LAND AS SOON AS POSSIBLE.
E-4
TM 1-1520-236-CL
SMOKE AND FUME ELIMINATION
1. Vents — Open.
2. LAND AS SOON AS POSSIBLE.
FUEL
SINGLE OR DUAL FUEL BOOST PUMP
FAILURE
1. FUEL switch — ON.
2. FUEL BOOST circuit breaker(s) — OUT.
3. LAND AS SOON AS PRACTICABLE.
ELECTRICAL SYSTEM
DC GENERATOR FAILURE
1. GEN BUS RESET/GEN FIELD circuit breakers —
IN.
2. GEN switch — RESET then GEN position.
If not restored:
3. GEN switch — OFF.
ALTERNATOR FAILURE — ALTER AND RECT
CAUTION LIGHTS ILLUMINATION
1. ALTNR switch — OFF RESET, then ON.
If alternator is not restored:
2. ALTNR — OFF RESET.
3. LAND AS SOON AS POSSIBLE.
E-5
TM 1-1520-236-CL
TRANSFORMER RECTIFIER UNIT (TRU) FAILURE – RECT CAUTION LIGHT ILLUMINATION
1. ALTNR switch — OFF RESET.
2. ALTNR switch — ON.
OVERHEATED BATTERY
1. BATTERY switch — OFF.
2. LAND AS SOON AS POSSIBLE.
3. EMER SHUTDOWN.
HYDRAULIC
HYDRAULIC FAILURE — SINGLE SYSTEM
1. EMER HYDR PUMP switch — OFF (pilot and gunner).
2. HYD CONTR circuit breaker — In.
3. EMER HYD PUMP circuit breaker — In.
4. SCAS — Disengage appropriate channels.
a.
No. 1 system — Yaw channel.
b. No. 2 system — Pitch and roll channels.
5. MASTER ARM switch — OFF.
6. LAND AS SOON AS PRACTICABLE. A run-on
landing at a speed of 50 KIAS or above is recommended.
7. EMER HYDR PUMP switch — EMER HYDR PUMP
(final approach).
HYDRAULIC FAILURE — DUAL SYSTEM
1. EMER HYDR PUMP switch — OFF (pilot and gunner).
E-6
TM 1-1520-236-CL
2. HYD CONTR circuit breaker — In.
3. EMER HYD PUMP circuit breaker — In.
4. SCAS — Disengage all channels.
5. MASTER ARM switch — OFF.
6. LAND AS SOON AS PRACTICABLE. A run-on
landing at a speed of 50 KIAS or above is recommended.
7. EMER HYDR PUMP switch — EMER HYDR
PUMP (final approach).
LANDING AND DITCHING
DITCHING — POWER ON
1. MASTER ARM — OFF.
2. PLT ORIDE — OFF.
3. JETTISON CANOPY.
4. Gunner — Exit.
5. Hover — Clear of gunner.
6. AUTOROTATE (Throttle Off).
DITCHING — POWER OFF
Engine malfunction procedures — Perform.
FLIGHT CONTROLS
FLIGHT CONTROL/MAIN ROTOR SYSTEM
MALFUNCTION
1. LAND AS SOON AS POSSIBLE.
2. EMER SHUTDOWN.
E-7
TM 1-1520-236-CL
LOW G WARNING
1. Cyclic — Aft to return rotor to positive thrust
condition.
2. Reduce severity of maneuver.
MAST BUMPING
1. Reduce severity of maneuver.
2. LAND AS SOON AS POSSIBLE.
STABILITY AND CONTROL AUGMENTATION
SYSTEM (SCAS) FAILURE
1. SCAS REL button — Press.
2. SCAS POWER switch — OFF.
3. Unaffected SCAS channels — Re-engage only
if power switch has not been turned off.
4. LAND AS SOON AS PRACTICABLE.
MISSION EQUIPMENT
WING STORES EMERGENCY JETTISON (PILOT)
1. JETTISON SELECT switches — As required.
2. JETTISON switch — Press.
WING STORES EMERGENCY JETTISON
(GUNNER)
1. JTSN SEL switch — As required.
2. WING STORES JETTISON switch — Up.
E-8
TM 1-1520-236-CL
TOW MISSILE EMERGENCY PROCEDURES
HANGFIRE/MISFIRE
1. Pedals — Maintain trim.
2. Wing stores — Check for fire.
3. LAND AS SOON AS POSSIBLE — Ensure
weapons are pointed at safe area.
4. Armament switches — OFF.
5. EMER SHUTDOWN.
6. Helicopter — Exit 90 degrees from line of fire.
EMERGENCY WIRE CUT
WIRE CUT switch — Press.
TOW MISSILE FLIGHT MOTOR FAILURE
WIRE CUT switch — Press.
TOW MISSILE ERRATIC IN FLIGHT
1. Attempt to keep missile down range.
2. Emergency wire — Cut if needed.
RUNAWAY GUN
1. MASTER ARM switch — OFF.
2. PLT ORIDE switch — OFF.
E-9
TM 1-1520-236-CL
TABLE E. CAUTION PANEL
LIGHT
CORRECTIVE ACTION
MASTER CAUTION
(No segment light)
LAND AS SOON AS POSSIBLE.
ENG/ENGINE OIL
PRESS
LAND AS SOON AS POSSIBLE.
XMSN/TRANS OIL
PRESS
LAND AS SOON AS POSSIBLE.
ENG OIL BYPASS
LAND AS SOON AS POSSIBLE.
TRANS OIL BYPASS
LAND AS SOON AS POSSIBLE.
TRANS OIL HOT
LAND AS SOON AS POSSIBLE.
ENG FUEL PUMP
LAND AS SOON AS POSSIBLE.
ENG CHIP
LAND AS SOON AS POSSIBLE.
TRANS, 42, 90
CHIP
LAND AS SOON AS POSSIBLE.
CHIP DETECTOR
LAND AS SOON AS POSSIBLE.
FWD FUEL BOOST
Refer to emergency procedure.
FUEL FILTER
LAND AS SOON AS POSSIBLE.
FUEL LOW
Information/system status.
AFT FUEL BOOST
Refer to emergency procedure.
E-10
TM 1-1520-236-CL
LIGHT
CORRECTIVE ACTION
DC GEN
Refer to emergency procedure.
RECT
Information/system status.
ALTER
Refer to emergency procedure.
EXT PWR
Close door.
GOV EMERG
Information/system status.
IFF CODE HOLD
Information/system status.
IFF CAUTION
Information/system status.
#1 HYD PRESS
Refer to emergency procedure.
EMERG HYD
PUMP ON
Information/system status.
#2 HYD PRESS
Refer to emergency procedure.
SPARE
LAND AS SOON AS POSSIBLE.
GUN ELEV
STOWED
Information/system status.
HUD INOP
Information/system status.
FCC INOP
Information/system status.
LASER ARMED
Information/system status.
IRCM INOP
Information/system status.
E-11/(E-12 blank)
TM 1-1520-236-CL
PERFORMANCE CHECKS
TOW CHECK (Area 1)
1. Launcher mounting – Check upper launcher aft
and forward bomb lugs secured to helicopter
ejector rack. Swaybrace bolts firmly against
launcher. Lower launcher aft and forward attaching points secure to upper launcher.
2. Electrical connectors – Check upper and lower
harnesses connected. Jettison quick disconnect
lanyard attached and not twisted.
ROCKET LAUNCHER CHECK (Area 1)
1. Launcher mounting – Check launcher aft and forward bomb lugs secured. Swaybrace bolts firmly
against launcher but not denting exterior.
2. Electrical connectors – Check harnesses connected to launcher. Jettison quick disconnect
lanyard attached.
3. Launcher – Check launcher exterior and tube interiors for damage and corrosion.
TURRET CHECK (Area 5)
1. Left side – Check recoil adapter, gun drive motor,
and elevation drive motor.
2. Gun mounting quick release pins – Secure.
3. End and mid barrel clamps – Secure.
4. Right side – Check AIM-1/EXL laser, slider assembly, feeder assembly, timing of feeder assembly to gun assembly, ammunition chute, and
azimuth drive motor.
5. Telescopic sight unit – Check.
P-1
TM 1-1520-236-CL
ENGINE START
1. Start switch – Press and hold (start time).
2. DC voltmeter – Check indications. Battery start
can be made provided the voltage is not below 14
volts when cranking through 10 percent N1
speed.
3. Main rotor – Check turning as N1 reaches 15 percent. If not, abort the start.
4. Starter switch – Release at 40 percent (N1) or after 35 seconds, whichever occurs first.
5. IGNITION SW – OFF, at 750 degrees C TGT.
6. Throttle – Slowly advance to 75 percent (N1).
Check stop by attempting to roll throttle off.
7. N1 – Check 68 percent to 72 percent. Hold a
slight pressure against the idle stop during this
check.
8. IGNITION switch – ON after TGT has stabilized.
GUNNERY CHECKLIST – STARTING ENGINE
1. Wing store pins – Remove.
2. Grounding cable – Remove.
3. Ground crews – Clear.
4. ANTI-COLLISION – ON (indicates helicopter is
not safe to approach).
5. TURRET STOW circuit breaker – IN.
6. WING STORE PWR circuit breaker – IN.
7. JETTISON SELECT switches – OUTBD/INBD.
8. Continue with ENGINE RUNUP.
P-2
TM 1-1520-236-CL
ARMAMENT – SYSTEMS CHECK
1. TOW built-in-test – Ensure TOW completes
BIT (Only performed in STBY TOW). Check as
follows:
a. TCP – TSU/SCA/EPS/MCA indicators display black on black. White on black indicates
failed BIT.
b. TCP BIT switch – Press and hold. Check for
Battle flags A\G\R displayed in the TSU. Pilot
checks for ascend/descend arrows and prelaunch constraints box displayed in HUD.
c.
TCP BIT switch – Release. BIT completed
within approximately 120 seconds. Indicator
moves from TEST to PWR ON at completion.
d. Barber pole indicators – Display black on
black.
e. TCP missile status indicator displays Barber
poles.
2. TSU tracking – Ensure TSU moves at fast rate
in LOW MAG and at slow rate in HI MAG, check
as follows:
a. TSU LHG HI/LOW MAG switch – LOW MAG.
b. SHC ATS switch – Track and check TSU focus as required.
c.
SHC – Press. Check TSU full travel left, right,
up, and down. SHC is released after each
check to ensure TSU reticle is stationary and
does not rotate. Pilot confirms Gunner LOS
on HUD indicates left, right, up, and down.
d. SHC ATS switch – STOW.
e. TSU LHG HI/LOW MAG switch – HI MAG.
P-3
TM 1-1520-236-CL
f.
SHC ATS switch – TRK.
g. SHC – Press to the right or left.
h. TSU LHG action switch – Press and hold.
TSU continues moving (Motion compensation check).
i.
SHC – Release. TSU continues to move.
j.
TSU LHG action switch – Release. TSU
stops.
k.
TSU LHG HI/LOW MAG switch – LOW MAG.
l.
SHC ATS switch – STOW.
3. HSS built-in-test – Check as follows:
a. HS arm assemblies – Attach to BIT magnets.
b. Test segment lights. All panels illuminate.
c.
HSS BIT switch – BIT. Test passed if Go light
illuminates, failed if PLT/GNR/EIA lights illuminate. If failed, ensure HSS arm assemblies are secure on BIT magnets, check all
cable connections, and press BIT again.
4. HSS to TURRET – Check. Ensure turret follows HSS reticle line of sight.
a. HS arm assemblies – Attach to helmet. Extend eyepiece over eye; adjust reticle brightness and test.
b. TCP Mode select switch – TSU GUN.
c.
Gunner looks left or right at least 45 degrees.
TSU LHG action switch press. Reticle
flashes until gun line is coincident with HS line
of sight. LHG action switch release.
d. TCP Mode select switch – STBY TOW.
P-4
TM 1-1520-236-CL
e. PLT ORIDE switch – ORIDE. Press cyclic
action switch and repeat steps in c. above.
f.
TCP Mode select switch – TSU GUN once
the TOW BIT is completed.
g. WPN CONTR switch – Pilot.
h. Pilot looks left or right at least 45 degrees.
Cyclic action switch press. Reticle flashes
until gun line is coincident with HS line of
sight. Cyclic action switch release.
i.
WPN CONTR switch – Gunner.
5. HSS to TSU and TSU to TURRET – Ensure
TSU follows HSS line of sight and turret follows
TSU line of sight, check as follows:
a. Gunner’s HS reticle on a target at least 45 degrees to the left or right.
b. SHC ATS switch – ACQ and release. Gunner
HS reticle retracts. TSU displays target.
c.
LHG action switch – Press. GUN flag flashes
until gun line is coincident with TSU. LHG action switch release, turret stows.
d. Gunner’s HS eyepiece – Extend over eye.
e. Pilot HS reticle – On a target and announces
Gunner target.
f.
ACQ switch – PHS and release. Gunner’s
eyepiece retracts, and target is displayed in
TSU.
g. SHC ATS switch – STOW.
6. RMS built-in-test – Ensure RMS passes a BIT,
check as follows:
a. Test switch – Press. Eight 8s and zone arm
lights illuminate and then 7s appear for each
LRU. Release test switch.
P-5
TM 1-1520-236-CL
7. HUD – Check as follows:
a. Mode switch – Test. All symbols displayed
except Stadiametric reticle.
b. Mode switch – NORM.
c.
RKT switch – DIR then IND check FCRs.
d. Night Filter contr – Day position (Green for
day/Red for night).
8. ALT – Check as follows:
a. Mode switch – STBY.
b. Press to test lamps – Test.
c.
Mode switch – Test. Approximately 25 sec.
GO and TRACK lights illuminate. GO light off
after approximately 30 sec.
d. Mode switch – As desired.
(O) 9. FLIR – Check as follows:
a. FCP Mode Indicator – Check POWER ON.
b. FCP BIT Indicator – Check for black on black.
c.
POLARITY switch – As desired (White/Black
Hot).
d. IR LEVEL control knob – Adjust approximately to the 2 o’clock position.
e. IR GAIN control – Adjust approximately to the
2 o’clock position.
f.
LHG MAG switch – NIGHT.
g. Gunner – Check for FLIR picture, adjust LHG
focus as desired, adjust IR Level and IR Gain
as desired.
h. LHG MAG switch – As desired.
P-6
TM 1-1520-236-CL
GUNNERY CHECKLIST – ENGINE SHUTDOWN
1. JETTISON SELECT switches – OFF.
2. ANTI-COLLISION – OFF (indicates aircraft is
safe to approach).
3. Ground crews – Approach aircraft.
4. Wing stores pins – Installed.
5. Grounding cable – Install.
6. TOW launcher – Missile arming lever up (if TOW
missiles are installed).
7. W2P1 – Disconnected.
8. Stray voltage – Check (if loading rockets).
a. RMS ZONE INVENTORY selector – 6PD.
b. MASTER ARM switch – ARMED.
c.
FCC circuit breaker – ON.
d. RMS RATE selector – “A” position.
e. RMS ZONE ARMING switches – ARMED.
f.
Stray voltage check – Completed.
g. FCC circuit breaker – OFF.
h. MASTER ARM switch – OFF.
9. RMS ZONE INVENTORY selector – As required.
10. RMS RATE selector – As desired.
11.
WING STORE PWR circuit breaker – OFF.
12. W2P1 – Connect.
13. TOW launcher – Missile arming lever down.
14. Grounding cable – Remove.
P-7
TM 1-1520-236-CL
15. Wing stores pins – Remove.
16. Ground crew – Clear.
17. ANTI-COLLISION – ON (indicates aircraft is not
safe to approach).
18. HUD PWR – STBY.
19. HSS LINKAGE – As desired.
20. LASER SAFE/TURRET DEPR LIMIT switch – As
desired.
21. TUR SLEW switch – NORM.
22. MASTER ARM – STBY.
23. TCP switch – STBY TOW.
24. Throttle – 100%.
25. TURRET STOW circuit breaker – IN.
26. ADS PWR circuit breaker – IN.
27. FCC switch – ON.
28. WING STORE PWR circuit breaker – ON.
29. JETTISON SELECT switches – OUTBD/INBD.
30. HUD PWR switch – ON.
31. FORCE TRIM switch – OFF
32. BEFORE TAKE OFF – CHECK.
P-8
TM 1-1520-236-CL
By Order of the Secretary of the Army:
Official:
ERIC K. SHINSEKI
General, United States Army
Chief of Staff
JOEL B. HUDSON
Administrative Assistant to the
Secretary of the Army
0029901
DISTRIBUTION:
To be distributed in accordance with Initial Distribution Number
(IDN) 311162, requirements for TM 1-1520-236-CL.
TM 1-1520-236-CL
The Metric System and Equivalents
Linear Measure
1 centimeter = 10 millimeters = .39 inch
1 decimenter = 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 hectometers = 3,280.8 feet
Weights
1 centrigram = 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 milliters = .34 fl. ounce
1 deciliter = 10 centiliters = 3.38 fl. ounces
1 liter = 10 deciliters = 38.82 fl. ounces
1 dekaliter = 10 liters = 2.64 gallons
1 hectoliter = 10 dekaliters = 26.42 gallons
1 kiloliter = 10 hectoliters = 264.18 gallons
078590-000
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