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✭ TM 55-1520-236-CL

TECHNICAL MANUAL

OPERATOR AND

CREWMEMBER CHECKLIST

ARMY MODEL

AH-1P (PROD)

AH-1E (ECAS)

AH-1F (MODERNIZED COBRA)

HELICOPTERS

T h i s c o p y i s a r e p r i n t w h i c h i n c l u d e s c u r r e n t

p a g e s f r o n C h a n g e s 1 t h r o u g h 1 1 .

"Approved for public release; distribution is unlimited."

This manual supersedes TM 55-1520-236-CL dated

3 January 1980 including all changes.

H E A D Q U A R T E R S

DEPARTMENT OF THE ARMY

2 1 O C T O B E R 1 9 8 7

U R G E N TTM 55-1520-236-CL

C H A N G E H E A D Q U A R T E R S

DEPARTMENT OF THE ARMY

NO. 12 WASHINGTON, D. C. , 12 December 1994

O p e r a t o r ’ s a n d C r e w m e m b e r ’ s C h e c k l i s t

A R M Y M O D E L S

AH-1P (PROD) AH-1E (ECAS)

AH-1F (MODERNIZED COBRA)H E L l C O P T E R S

DISTRIBUTION STATEMENT A: Approved for pub l icrelease; distribution is unlimited.

TM 55-1520-236-CL, 21 October 1987, is changed asfo l lows:

1 . R e m o v e a n d i n s e r t p a g e s a s i n d i c a t e d b e -

low. New or changed text material is indicated by a verti-

cal bar in the margin. An illustration change is indicated by

a miniature pointing hand.

R e m o v e p a g e s I n s e r t p a g e s

- - - - N - 2 . 1 / ( N - 2 . 2 b l a n k )

2. Retain this sheet in front of manual for reference

purposes.

U R G E N T

MILTON H. HAMILTON

U R G E N T

T M 5 5 - 1 5 2 0 - 2 3 6 - C LC 12

By Order of the Secretary of the Army:

GORDON R. SULLIVAN

General, United States Army

Chief of Staff

Official:

MILTON H. HAMILTONAdministrative Assistant to the

Secretary of the Army0 7 0 3 7

D I S T R I B U T I O N :

To be distribution in accordance with DA Form

12-31-E, block no. 1162, requirements for

T M 5 5 - 1 5 2 0 - 2 3 6 - C L .

U R G E N T

Richard Woods

2

Richard Woods

1

Richard Woods

1991

TM 55-1520-236-CL

GENERAL INFORMATION AND SCOPE

SCOPE. This checklist contains the operators and crew-members checks to be accomplished during normal andemergency operations.

GENERAL INFORMATION. The checklist consists of threeparts: Normal procedures, emergency procedures, and per-formance data. Normal procedures consist of the proce-

dures required for normal flight. Emergency proceduresare subdivided into 10 classifications as follows: engine, ro-

tor/transmission/drive system, fire, fuel, electrical (Elect),hydraulic (Hyd), landing and ditching (Ldg/Dtch), flight con-trols (Flt Cont), bailout (Bailout), and mission equipment

(MSN/EQPT) (as applicable).

N O T E

This checklist does not replace the amplifiedversion of the procedures in the operators manu-al (TM 55-1520-236-10), but is a condensed ver-sion of each procedure.

Normal Procedures Pages. The contents of the normalprocedures of this manual are a condensation of the am-plifed checklist appearing in the normal procedures or crew

duties portion of the applicable operators manual.

Emergency Procedures Pages. The requirements for thissection of the condensed checklist manual (CL) are identi-cal to those for the normal procedures, except that the in-formation is drawn from the amplified checks in theemergency procedures portion of the operators manual.The emergency requirements are subdivided into the 10classifications listed above.

i

TM 55-1520-236-CL

P e r f o r m a n c e D a t a P a g e s . T h i s s e c t i o n c o n t a i n s

e x p a n d e d a r m a m e n t c h e c k s a n d e n g i n e s t a r t i n g

p r o c e d u r e s .

Symbols Preceding Numbered Steps

* – Indicates performance of steps is mandatory forall “Thru Flights”.

✭� – Indicates a detailed procedure for this step is in-cluded in the Performance Checks section, locat-ed 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. Reports of errors, omissions, and

recommendations for improving this publication by the in-dividual user are encouraged. Reports should be submittedon DA Form 2028 (Recommended Changes to Publicationsand Blank Forms) and forwarded direct to Commander, USArmy Aviation Systems Command, AMSAV-MPSD, 4300Goodfellow Blvd., St. Louis, MO 63120-1798.

CODE SYSTEM

Production

Enhanced Cobra Armament System

Modernized Cobra

ii

T M 5 5 - 1 5 2 0 - 2 3 6 - C L

H E L l C O P T E R A N D S Y S T E M S

B E F O R E E X T E R I O R C H E C K

W A R N I N G

★ *1.

* 2 .

* 3.

4 .

5 .

6 .

7.

8 .

9 .

10.

* 11.

D o n o t p r e f l i g h t u n t i l a r m a m e n t

systems are safe.

A r m a m e n t s y s t e m s - S a f e .

C a n o p y r e m o v a l a r m i n g / f i r i n g m e c h a n i s m

safety pins - IN.

P u b l i c a t i o n s - C h e c k .

B A T / B A T T E R Y s w i t c h - O N / S T A R T .

N O N - E S N T L B U S s w i t c h - M A N U A L .

Lights - Check if use is anticipated.

B A T / B A T T E R Y s w i t c h - O F F .

P i l o t ’ s H S S l i n k a g e a s s e m b l y - C h e c k .

A r e a b e h i n d p i l o t s e a t - C h e c k .

Map l i gh t - OFF .

C a n o p y - C h e c k .

A R E A 1 - F U S E L A G E A N D M A I N R O T O R

* 1 .*2. *3.

4 .

* 5.

* 6.

7.

8 .

9 .

(O) 10.

11.

* 1 2 .

F u e l - C h e c k q u a n t i t y .

F u e l s a m p l e - C h e c k a s r e q u i r e d .

M a i n r o t o r b l a d e s u r f a c e - C h e c k .

F u s e l a g e - C h e c k .

A m m u n i t i o n b a y - C h e c k .

H y d r a u l i c c o m p a r t m e n t - C h e c k .

L a n d i n g g e a r - C h e c k .

A r e a b e n e a t h t r a n s m i s s i o n - C h e c k .

W i n g - C h e c k .

A r m a m e n t - C h e c k .

E n g i n e a n d t r a n s m i s s i o n c o w l i n g – S e c u r e

o p e n .

T r a n s m i s s i o n a r e a - C h e c k .

N-1 C 1 1

*13.

*14.*15.

16.

16.1.(O) 17 .

18.

TM 55-1520-236-CL

Pylon area - Check.

Swashplate and support - Check.Main rotor system/Root end fitt ing inboard

surface - Check.Engine compartment - Check and close

cowlings.

Particle separator scavenge ejector - Check.Laser sensor assembly - Check.

Fuselage - Check.

AREA 2 - TAIL SECTION - R IGHT SIDE

1 . Tailpipe/IR duct assembly - Check.2 . E l e c t r i c a l c o m p a r t m e n t - C h e c k .3 . Right side tai lboom - 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 tai lboom - Check.3 . Oil cooler compartment - Check.

A R E A 4 - F U S E L A G E - L E F T S I D E

1.

*2.

3 .4 .

5 .

6 .7 .

8 .

E n g i n e a n d t r a n s m i s s i o n c o w l i n g - S e c u r e

open and check.

Plenum and Part icle separator - Check.

Tail rotor driveshaft - Check.Transmission area - Check.

D e l e t e d .

Swashplate and support - Check.Top pylon area - Check.

Main rotor system - Check.

E n g i n e a n d t r a n s m i s s i o n c o w l i n g s - C l o s e .9.

N-2 C 1 1

T M 5 5 - 1 5 2 0 - 2 3 6 - C L

10.(O) 11.

12.

13.

14.

*15.

16.

17.

18.

19.

*20.

Wing — Check.

Armament — Check.

Area beneath transmission — Check.

Landing gear — Check.

Lower fuselage — Check.

Hydraulic compartment — Check.

Canopy — Check. (Single Pilot — Perform

BEFORE STARTING ENGINE — GUNNER.)

Fire extinguisher — Check.

Fuselage — Check.

Static port — Check.

Ammunition bay — Check.

* U . S . G O V E R N M E N T P R I N T I N G O F F I C E : 1 9 9 4 - 6 5 5 - 1 2 1 / 2 1 0 0 1

N-2.1/(N-2.2 blank) C 1 2

TM 55-1520-236-CL

AREA 5 - NOSE SECTION

1. Turret (left and right side) - Check.2. Windshield and rain removal nozzles - Check.

(O) 3. Turret stowed check- Perform.(O) 4. AIM - l/EXL aiming light - Check.

*WALK-AROUND CHECK

1. Cowling, doors, and panels - Secure.2. Covers, tiedowns, and cables - Remove and

rotate main rotor.(O) 3. Wing store safety pins - Removed.(O) 4. TOW launcher missile arming lever - Check

down.5. Chaff dispenser system safety pin - Remove

and stow.(O) 5.1 AIM - l/EXL aiming light warning flag -

Removed.6. Crew/passenger brief- Complete.

BEFORE STARTING ENGINE - GUNNER

1.2 .

3. 4 . 5. 6.

7. 8. 9.10.11.12.13.

Cockpit-Check.HSS - Check and stow.Miscellaneous control panel switches - Set.EMER HYDR PUMP switch - OFF.JTSN SEL switch - As desired.WING STORES JEITISON switch - OFF,cover down and lockwired.Avionics - As required.System/flight instruments - Check.Attitude indicator- Caged and locked.Standby compass - Check.Armament switches - Set.Map light - OFF.Canopy removal arming/firing mechanismsafety pin - Remove and stow (if occupied).

N-3 C11

T M 5 5 - 1 5 2 0 - 2 3 6 - C L

BEFORE STARTING ENGINE - PILOT

* 1.

* 2.

* 3.

* 4.

* 5.

* 6.6 . 1 .

* 7.

8.

9.

10.

11.

12.

13.

* 14.

* 15.

( O ) 1 6 .

( O ) 1 7 .

( O ) 1 8 .19.

20.

21.

22.

IGNITION SW - ON.

Collective friction and lock - OFF.

AC and armament circuit breakers - Asrequired.

P W R panel switches - Set.MASTER CAUTION/RPM lights – Checkilluminated.Caution panel light - TEST and RESET.L OW G warning light - Press to test.

ENGINE panel switches - Set.

FAT indicator - Check.

SCAS POWER switch - OFF.

Armament switches - Set.

CODE HOLD switch - OFF.

EMER HYDR PUMP - Check.

System/flight instruments - Check and set.

Altimeter - Set.

FIRE DET TEST switch - TEST.

Reflex sight - Check.

HUD - OFF.

Pilot steering indicator - Check.

Clock - Set.

HEAT/VENT AIR PULL knob - Out.

Avionics/mission equipment - OFF and set asdesired.

COMPASS switch - MAG.Dispenser switch - SAFE.

LTG panel switches - Set.

ECS panel switches - Set.

DC circuit breakers - IN.

Canopy removal arming/firing mechanism

safety pin - Remove and stow.

*STARTING ENGINE

1. Ground Power unit - Connect for GPU start.

( BAT switch - OFF.)

2. Rotor guard - Posted.

3. Rotor blades - Check clear.

N-4 C 1 1

2 2 . 1 .

2 3 .

2 4 .

2 5 .

2 6 .

TM 55-1520-236-CL

4. Throttle - Check and set.

5 . Engine - Start .6. GEN switch - ON.7. GPU - Disconnect after GPU start.8. BAT/BATTERY switch – ON/RUN.9 . INV switch - As required.

10 . Systems - Check.

* E N G I N E R U N U P

*1.*2.

3.*4.*5.

6.*7.*8.9.

*10.*11.*12.*13.

14.

15.

Avionics/mission equipment – On as desired.SCAS POWER switch – POWER.Hydraulic system – Check.Canopy doors - Secure.Throttle - 100%.Deleted.Systems – Check as required.SCAS - Check as required.Armament systems – Set.Avionics/mission equipment – Check and set.Altimeters - Set.HSI – Check.ADI – Set.Armament systems - Check.

Health Indicator Test (HIT) check - Perform.

* H O V E R C H E C K

1. Flight controls - Check.2. Engine and transmission instruments - Check.3. Flight instrument – Check as required.4 . Power - Check .

* B E F O R E T A K E O F F

1. RPM - 100 percent.2. Systems - Check.3. Avionics - As required.4. Mission equipment – Set as required.5. Armament switches – Set.

N-5 C 1 1

T M 5 5 - 1 5 2 0 - 2 3 6 - C L

BEFORE LANDING

1. Gunner PLT ORIDE switch - OFF.

2. MASTER ARM switch - STBY.

3. TCP - TSU/GUNS.

(O) 3.1. AIM switch - OFF.4. TURRET DRIVE MOTOR circuit breaker -

Out.

5. GUN ELEV STOWED light - Check on.

6. Searchlight - As required.

7. Dispenser control switch - SAFE.

AFTER LANDING

1. Searchlight - As required.

2. Transponder - As required.

3. TCP - STBY TOW.

ENGINE SHUTDOWN

1.

2.

3.4.

5.

6.7.

8.

9.

FCC switch - OFF.

Throttle - Idle for two minutes.

FORCE TRIM switch - FORCE TRIM.

Armament system - OFF and set.

Systems - Check and turn OFF.

Throttle - OFF.Engine and PWR panel switches - OFF.

IGNITION SW - OFF.

Both canopy removal arming/firing mecha

nism safety pins - In.

BEFORE LEAVING HELICOPTER

1.

2.3 .

4.

(O) 4 .1

5.

6.

Walk around check.

Mission equipment - Secure.

All armament- Check.

Chaff dispenser system safety pin - Insert.

AIM - 1/EXL aiming light warning flag

- Installed.

Complete all forms and records.

Secure helicopter.

N-6 C 1 1

TM 55-1520-236-CL

BEFORE EXTERIOR CHECK

1 . Armament systems safe as follows:

a. Wing ejector racks - Jettison safety pins

installed.

b. TOW launcher - Missile arming lever up

(if missile installed).

c. Rocket launcher - Igniter arms in contact

with rockets to reduce possibility of igni-

tion from electromagnetic interference

(EMI).

d. MASTER ARM switch - OFF.

(O) d.1. AIM switch - OFF.e. PLT OVRD switch - OFF.

f. JETTISON SELECT switches - OFF.

(O) g. TURRET STOW circuit breaker - OUT.

(O) h. W2P I - Disconnect.

BEFORE STARTING ENGINE - GUNNER

S T A T I O N

11. Armament switches - Set as follows:

a.

b

c.

(O) d.e.

f.

f.1.

g.

h.

i.

j .

Gunner SHC ACO/TRK/STOW

STOW.

switch

Gunner TCP MODE SELECT switch

OFF; system status annunciator displays

OFF.

Gunner TCP CAMERA switch - OFF.

Gunner TCP LASER ARM switch - OFF.

Gunner TCP TSU RTCL switch - OFF.

Gunner TCP MISSILE SELECT switch

As desired.

FLIR control panel OFF/ON/BIT

switch - OFF.

Gunner RD RMNG indicator/selector

Set.

TUR SLEW switch - NORM.

LASER SAFE/TURRET DEPR limit

switch - DEPR limit.

TSU GUN SLEW RATE switch - HIGH.

P - 1 C 1 1

TM 55-1520-236-CL

BEFORE STARTING ENGINE - PILOT

S T A T I O N

10. Armament switches - Set as follows:

(O)* a. RMS - Set.

b. WPNS CONTR - Gunner.c. WING STORE - As desired.

(O) d. RECOIL COMPEN - OFF (Live Firing

- ON).

e. Range - As desired.

STARTING ENGINE

5. Engine - Start as follows:

a.

b.

c.

d .

e.

f.

g.

h.

Start switch - Press and hold (start

time).

DC voltmeter - Check indication. Bat-

tery starts can be made provided the

voltage is not below 14 volts when

cranking through 10 percent N1 speed.

Main rotor - Check turning as NI

reaches 15 percent. If not, abort the

start.

Start switch - Release at 40 percent

(NI) or after 35 seconds, whichever

occurs first.

IGNITION SW - OFF, at 750 degrees

C TGT.Throttle - Slowly advance past the

engineidlestop to engine idle position.

Check stop by attempting to roll throttle

off.

N1 - Check 68 percent to 72 percent.

Hold a slight pressure against the idle

stop during this check.

IGNITION SW - ON after TGT has

stabilized.

P -2

TM 55-1520-236-CL

E N G I N E R U N U P

9. Armament systems - Set.

a.

b.

b.1.

c.

c.1.

d.

e.

f.

MASTER ARM - STBY.

TCP switch - STBY TOW.

FLIR CONTROL PANEL

OFF/ON/BIT switch - ON.

HUD PWR switch - STBY.

AIM switch - OFF.

Turret drive motor circuit breaker -

IN.

q ADS PWR circuit breaker - IN.

FCC switch-FCC.

14. Armament systems - Check as follows:

a .b.c.d .d . 1 .e.f.g .

h .i .

(O) j.

(O) k.(O) l.

(O) m.

HSS BIT - Check.HSS to turret - Check.HSS to TSU - Check.TOW BIT - Check. FLIR BIT - Check .TSU fast rate tracking - Check.TUS slow rate tracking - Check.TSU motion compensation - Check.TSU posit ion and ret icle - Check.TSU to turret - Cheek.RMS BIT - Check.HUD - Check.M-73 sight - ON/Check.Airborne laser tracker - Check.

B E F O R E T A K E O F F

5. Armament switches - Set.

a.

b.

c.

d.

e.

e . l .

f.

Gunner PLT ORIDE switch - OFF.Pilot MASTER ARM switch - STBY.

TCP - TSU/GUN.

TOW launchers - Missile arming lever

down.

Wing ejector rack jettison safety pins -

Removed.

AIM - 1/EXL aiming light pro-tect ive cover/warning f lag - removed.

Other switches - Set for mission.

P - 3

TM 55-1520-236-CL

ENGINE SHUTDOWN

4.

(O)

(O)

(O)

(O)

(O)

(O)

Armament systems - OFF and set as follows:

a . D e l e t e d .

b . A D S P W R c i r c u i t b r e a k e r - o u t .

c . TURRET STOW c i r cu i t b r eake r - ou t .

c . 1 . F L I R c o n t r o l p a n e l O F F / O N /

d.

e.

f.

g.h.

i.

j .

k.

l.

BIT switch -OFF.

TCP switch - OFF.

MASTER ARM switch - OFF.

HUD night filter - DAY position.

HUD PWR switch - OFF.

M73 sight-OFF.

LASER SAFE/TURRET DEPR LIMIT.switch - DEPR LIMIT.

TUR SLEW switch - GND

TEST/SLOW.

HSS linkage - STOW.

AIM switch - OFF.

BEFORE LEAVING HELICOPTER CHECK

3. All armament - Check as follows:

a. Wing ejector rack jettison safety pins

Installed.

b. TOW missile arming lever - UP (if mis

sile

installed).

c. Rocket igniter arms - In contact with

rockets to reduce possibility of ignition

from electromagnetic interference (EMI)

P-4

TM 55-1520-236-CL

E N G I N E

A U T O R O T A T E

1. Collective-Adjust.2. Pedals–Adust.3. Throttle–Adjust.4. Airspeed-Adjust.

(O) 5. Wing stores–Jettison.

EMER SHUTDOWN

1. Throttle-OFF.2. Fuel switch-OFF.3. BAT/BATTERY switch-OFF.

E M E R G O V O P N S

1. GOV switch–EMER.2. Throttle–Adjust.

3. Land a s soon a s possible.

ENGINE MALFUNCTION—HOVER

A U T O R O T A T E

ENGINE MALFUNCTION–LOWALTITUDE/LOW AIRSPEED OR CRUISE.

1. AUTOROTATE.2. E M E R G O V O P N S .

ENGINE MALFUNCTION–120 KIAS ANDA B O V E

1. CYCLIC-ADJUST.

2. AUTOROTATE.3. E M E R G O V O P N S .

E-1 C2

TM 55-1520-236-CL

DROOP COMPENSATOR FAILURE

E M E R G O V O P N S

ENGINE COMPRESSOR STALL

1. Collective–Reduce.2. H T R / R A I N R M V o r E C U switch-OFF.3. DE-ICE switch-OFF.4. L a n d a s s o o n a s poss ib le .

INLET GUIDE VANE ACTUATOR FAILURE

Land as soon as practicable.

ENGINE OVERSPEED

1. Collective-Increase.2. Throttle-Reduce.3. E M E R G O V OPNS.

ENGINE OIL TEMPERATURE HIGH

Land as soon as possible.

E-2 C 4

E-3/(E-4 blank)

TM 55-1520-236-CL

ROTOR, TRANSMISSON, ANDDRIVE SYSTEM

TAIL OF 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.

TM 55-1520-236-CL

F I R EF I R E — E N G I N E S T A R T

1. STARTER SWITCH-PRESS

2. Throttle-OFF.

3. FUEL switch-OFF.

F I R E — G R O U N D ( P i l o t ’ s S t a t i o n )

EMER SHUTDOWN

F I R E — G R O U N D ( G u n n e r ’ s S t a t i o n )

1. IDLE STOP-RELEASE AND HOLD.2. Throttle-OFF.3. EMER ELEC PWR switch-EMERG OFF.

F I R E — F L I G H T ( P o w e r — O N )

1. Land as soon as possible.2. EMER SHUTDOWN.

F I R E — F L I G H T ( P o w e r — O F F )

1. AUTOROTATE.2. EMER SHUTDOWN.

E L E C T R I C A L F I R E — F L I G H T

1. BAT/BATTERY switch-ON/START.2. Electrical switches-OFF.3. NON-EST BUS switch-NORMAL.4. Land as soon as possible.

5. EMER SHUTDOWN.

F U M E S F R O M E C S

1. ECS–OFF.2. Land as soon as possible.

E-5/ (E-6 b lank) C 8

TM 55-1520-236-CL

FUEL

S I N G L E O R D U A L F U E L B O O S T P U M P

F A I L U R E

1. Fuel switch-ON.2. Pump circuit breaker(s)-OUT.3. Land as soon as pract icable .

E-7/(E-8 blank)

TM 55-1520-236-CL

E L E C T R I C A L

D C G E N E R A T O R F A I L U R E

1. GEN BUS RESET/GEN FIELD c ircuitb r e a k e r – I N .

2 . GEN switch-RESET then GEN pos i t ion .

If not restored:

3 . GEN switch-OFF.4 . T C P M O D E S E L s w i t c h - O F F .

5. Switches-OFF for unused equipment.6 . NON ESNT BUS switch-As required .

AC INVERTER FAILURE–CAUTIONL I G H T I L L U M I N A T I O N

1. INV MAIN/STBY circuit breakers–IN.2. INV switch-STBY.3. SCAS–Re-engage.

A L T E R N A T O R F A I L U R E – A L T E R A N DR E C T C A U T I O N L I G H T S I L L U M I N A T I O N

1. ALTNR switch-OFF RESET, then ON.

If alternator is not restored:

2 . ALTNR–OFF RESET.3. Land as soon as possible.

T R A N S F O R M E R R E C T I F I E R U N I T

( T R U ) F A I L U R E – R E C T C A U T I O N L I G H T

ILLUMINATION

1. ALTNR switch-OFF reset .2 . ALTNR switch-ON.

E - 9

TM 55-1520-236-CL

OVERHEATED BATTERY

1 .2 .3 .

BAT/BATTERY switch-OFF.Land as soon as possible.EMER SHUTDOWN.

E-10

TM 55-1520-236-CL

H Y D R A U L I C

H Y D R A U L I C F A I L U R E — S I N G L E S Y S T E M

1.

2.

3.

4.

5.6.

7.

E M E R H Y D R P U M P s w i t c h - O F F ( P i l o t a n d

gunner).

a .

HYD CONT/CONTR circuit breaker–In.EMER HYDR/HYD PUMP circuitbreaker–In .

SCAS–DISENGAGE appropriate channels.No. 1 system–Yaw channel.No. 2 system–Pitch and roll channels.

M A S T E R A R M s w i t c h - O F F .Land as soon as practicable. A run-on landing at aspeed of 50 KIAS or above is recommended.E M E R H Y D R P U M P s w i t c h - E M E R H Y D R

b .

PUMP (final approach).

H Y D R A U L I C F A I L U R E — D U A L S Y S T E M

1.

2.3.

4.5.6.

7.

EMER HYDR PUMP switch-OFF (pi lot andgunner).HYD CONT/CONTR and c ircui t breaker–In.EMER HYDR/ HYD PUMP circuitbreaker–In .SCAS–Disengage all channels.M A S T E R A R M s w i t c h - O F F .Land as soon as practicable. A run-on landing at a

speed of 50 KIAS or above is recommended.E M E R H Y D R P U M P s w i t c h - E M E R H Y D RPUMP (final approach).

E-11/(E-12 blank)

TM 55-1520-236-CL

LANDING AND DITCHING

DITCHING–POWER ON

1 . M A S T E R A R M – O F F .2 . P L T O V R D / P L T O V R I D E – O F F .3 . J E T T I S O N C A N O P Y .4. Gunner–Exit.5 . Hover–Clear o f gunner .6 . Thrott le -OFF and autorotate .

DITCHING—POWER OFF

Perform engine malfunction procedures.

JETTISON CANOPY

1.2.

Arming/firing mechanism handle–turn 90°.Arming/firing mechanism handle–Pull.

E-13/(E-14 blank)

TM 55-1520-236-CL

F L I G H T C O N T R O L S

F L I G H T C O N T R O L / M A I N R O T O R S Y S T E M

M A L F U N C T I O N

1. Land as soon as possible.2. EMER SHUTDOWN.

L O W G W A R N I N G

1. Cyclic stick – Aft to return rotor to positivethrust condition.

2. Reduce sever i ty o f maneuver .

MAST BUMPING

1. Reduce severity of maneuver.2. Land as soon as p o s s i b l e .

S T A B I L I T Y A N D C O N T R O L

A U G M E N T A T I O N S Y S T E M ( S C A S )

F A I L U R E

1. SAS 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 poss ib le .

Pages E-17/(E-18 blank) has been deleted.

E-15/(E-16 blank) C 8

TM 55-1520-236-CL

B A l L O U T

BAlLOUT PROCEDURES

1. FORCE TRIM switch-TRIM.2. Attitude–Attempt to stabilize helicopter in a

shallow descent at approximately 80 KIAS.3. JETTISON CANOPY.4. Bailout.

E-17/(E-18 blank)

TM 55-1520-236-CL

MISSION EQUIPMENT

W I N G S T O R E S E M E R G E N C Y J E T T I S O N

( P I L O T )

1. JETTISON SELECT switches-As required .

2 . JETTISON switch-Press .

W I N G S T O R E S E M E R G E N C Y J E T T I S O N

( G U N N E R )

1. JTSN SEL switch-As required .2 . WING STORES JETTISON switch-Up.

T O W M I S S I L E E M E R G E N C Y P R O C E D U R E S

HANGFIRE /M ISF IRE

1. After landing–Ensure weapons are pointed at safe

area.2. Armament switches-OFF.3. Engine shutdown.4. Helicopter–Exit 90 degrees from line of fire.

E M E R G E N C Y W I R E C U T

WIRE CUT switch-Press .

T O W M I S S I L E F L I G H T M O T O R F A I L U R E

WIRE CUT switch-Press .

T O W M I S S I L E E R R A T I C I N F L I G H T

1. Attempt to keep missile down range.2. Emergency wire cut if needed.

E - 1 9

TM 55-1520-236-CL

M A S T E R A R M s w i t c h - O F F .

PLT OVRD/ORIDE switch-OFF.

E - 2 0

RUNAWAY GUN

1.2.

TM 55-1520-236-CL

T A B L E E .

L I G H T

MASTER CAUTION

ENG/ENGINE OIL

P R E S S

XMSN/TRANS OIL

P R E S S

E N G O I L B Y P A S S

X M S N / T R A N S

OIL BYPASS

X M S N O I L H O T /

X M S N O I L T E M P /

T R A N S O I L H O T

E N G F U E L P U M P

ENG CHIP

XMSN/TRANS, 42°

90° CHIP

CHIP DETECTOR

F W D F U E L B O O S T

C A U T I O N P A N E L

C O R R E C T I V E A C T I O N

( N o s e g m e n t l i g h t . )











R e f e r t o e m e r g e n c y p r o c e d u r e .

E - 2 1 C 1 1

TM 55-1520-236-CL

LIGHT

FUEL FILTER

FUEL LOW

AFT FUEL BOOST

DC GEN

MAIN INVTR

RECT

STBY INVTR

ALTER

EXT PWR

GOV EMER EMERG

IFF CODE HOLD

IFF CAUTION

HYD PRESS #l/#1 HYD PRESS

EMER HYDRPUMP ON

HYD PRESS #2/#2 HYD PRESS

CORRECTIVE ACTION


Land as soon as practicable.

Refer to emergencyprocedure.



Information/system status.



Close door.







E - 2 2 C11

TM 55-1520-236-CL

L I G H T

S P A R E

G U N E L E V S T O W E D

HUD INOP

F C C I N O P

LASER ARMED

IRCM INOP

C O R R E C T I V E A C T I O N







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TM 55-1520-236-CL

By Order of the Secretary of the Army:

CARL E. VUONOGeneral, United States Army

Official: Chief of Staff

R. L. DILWORTH

Brigadier General, United States ArmyThe Adjutant General

DISTRIBUTION:To be distributed in accordance with

DA Form 12-31, CL requirements for AH-1P/EHelicopter, Attack and AH-1F Helicopter,Attack.

✩ GPO : 1995 0 - 393-122

PIN : 031955-000

operator and crewmember checklist army model …€¦ · · 2006-10-13tm 55-1520-236-cl technical...

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