TM1-1520-237-cl.pdf

OPERATOR’S AND CREWMEMBER’S

CHECKLIST

FOR

HELICOPTERS, UTILITY TACTICAL

TRANSPORT

UH-60A NSN 1520-02-035-0266

(EIC: RSA)

UH-60L NSN 1520-01-298-4532

(EIC: RSN)

EH-60A NSN 1520-01-082-0686

(EIC: RSB)

WARNING - This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C. Sec.

2751 et seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401 et seq. Violation of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25.

DISTRIBUTION STATEMENT D. Distribution authorized to the DoD and DoD contractors only due to Critical Technology effective as of 15 June 2003. Other requests must be referred to Commander, US Army Aviation and Missile Command, ATTN: SFAE-AV-UH/L, Redstone Arsenal, AL 35898-5000.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction of the document.

*This manual supersedes TM 1-1520-237-CL, dated 25 September 2009, including all changes.

*TM 1-1520-237-CL

TECHNICAL MANUAL

HEADQUARTERS

DEPARTMENT OF THE ARMY

25 September 2009 troy.mercier Text Box

GENERAL INFORMATION AND SCOPE

SCOPE. This checklist contains the operator’s checks to be accomplished during normal and emergency operations.

GENERAL INFORMATION.

NOTE

This checklist does not replace the amplified ver-sion of the procedures in the operator’s manual (TM 1-1520-237-10), but is a condensed version of each procedure.

This 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 9Before Landing9. 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 10 classifications as follows: engine, propeller/rotor (insert either PROP or ROTOR), fire, fuel, electrical (ELECT), hydraulic (HYD), landing and ditching (LDG/DTCH), flight controls (FLT CONT), bailout or ejection (BAILOUT) (EJECT), and mis-sion equipment (MSN/EQPT) (as applicable). Detailed procedures consist of detailed procedural checks.

NORMAL PROCEDURES PAGES. The contents of the normal procedures of this manual are a condensed version of the amplified checklist appearing in the normal procedures or crew duties portion of the applicable operator’s manual.

TM 1-1520-237-CL

i

EMERGENCY PROCEDURES PAGES. The require-ments of 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 operator’s manual. The emergency requirements are subdivided into 10 classifications listed above. Immediate action items shall be underlined.

CHECKLIST SYMBOLS. Symbols preceding numbered steps:

* — Indicates performance of steps is mandatory for all thru flights.

N — Indicates 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.

④ — Pilot not on the controls duties.

— Immedia te ac t ion emergency i t ems are underlined.

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BEFORE EXTERIOR CHECK.

1. Publications - Check.

*2. Helicopter covers, locking devices, tiedowns, and grounding cables - Removed and secured.

*3. Fuel - Check quantity as required.

4. Fuel sample (main and external) - Check.

EXTERIOR CHECK.

NOSE SECTION (AREA 1).

*1. Main rotor blades - Check.

2. Fuselage - Nose area, check.

COCKPIT - LEFT SIDE (AREA 2).

1. Cockpit area - Check.

*2. Left engine oil level - Check.

*3. Check main landing gear drag beam for cracks.

CABIN TOP (AREA 3).

1. Cabin top - Check.

2. APU - Check; oil level, use dipstick.

3. APU compartment - Check for debris and FOD.

4. Section I driveshaft - Check for damage, debris or FOD.

O 5. APU IPS - Check.

N-1

6. Gust lock - Check.

7. Main transmission - Check; oil level, use dipstick.

*8. Main rotor system - Check.

INTERIOR CABIN (AREA 4).

1. Cabin - Check.

2. APU accumulator pressure gage - Check mini-mum 2,800 psi.

3. Transmission oil filter impending bypass indica-tor - Check.

4. Cargo hook - Check.

O *5. Cabin MCU Control - OFF.

O *6. CMWS Crew Safety pin - Instal led and locked.

7. UDM - Install.

8. Survival gear and mission equipment - Check as required.

FUSELAGE - LEFT SIDE (AREA 5).

1. Fuselage - Check.

O *2. CMWS Flare dispenser - Check.

3. Section II driveshaft - Check for damage, debris or FOD.

4. Section III driveshaft - Check for damage, debris or FOD.

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*5. Intermediate gear box - Check; oil level.

6. Tail landing gear - Check.

TAIL PYLON (AREA 6).

1. Tail pylon - Check.

*2. Tail rotor - Check.

*3. Tail rotor gear box - Check; oil level.

FUSELAGE - RIGHT SIDE (AREA 7).

1. Fuselage - Check.

O *2. CMWS Flare dispenser - Check.

COCKPIT - RIGHT SIDE (AREA 8).

*1. Right engine oil level - Check.

*2. Check main landing gear drag beam for cracks.

3. Cockpit area - Check.

4. Ensure all access covers and maintenance platforms are closed and checked.

.*5. Crew and passenger briefing - Complete as required.

BEFORE STARTING ENGINES.

*1. Copilot’s collective - Extended and locked.

2. Shoulder harness locks - Check for proper operation of the two position harness inertia reel lock lever.

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3. PARKING BRAKE - Release, then set.

.4. Circuit breakers and switches - Set.

COCKPIT EQUIPMENT CHECKS.

*1. FUEL PUMP switch - APU BOOST.

*2. APU CONTR switch - ON.

*3. APU generator switch - ON.

*4. EXT PWR switch - OFF and cable discon-nected.

O*4.1. 701C 701D/CC EDECU - Check signal validation code 15%.

*5. Doppler/GPS - On and program.

O.6. Deleted.

O*7. Deleted.

*8. EH IINS SYSTEMS SELECT switches - DG and VG.

.*9. EH IINS - Align.

O*9.1. A2C2S AIP switches - As required.

O*9.2. ABC2 Audio selector switches - As required.

10. Caution/advisory/warning panels - Check as required.

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*11. Deleted.

N 12. Interior/exterior lighting - Set.

*13. Avionics - On.

O*14. IVHMS CDU - On. Verify data download, time and percentage displayed.

15. Clocks - Set and running.

O .*16. Mission equipment - Check.

.*17. Cold weather control exercise - Check if temperature is below -17°C (1°F).

*18. AFCS FAILURE ADVISORY lights - If on, POWER ON RESET.

*19. SAS1 off, SAS2, TRIM, FPS, and BOOST switches - Push ON.

.20. Flight controls - Check first helicopter flight of the day.

*21. Cyclic centered. Collective, from full down position, raise no more than 1 inch (to prevent droop stop pounding) and friction.

*22. COMPASS swi tch AHRS AHRS Mode - SLAVED. Set as required.

23. BACKUP HYD PUMP switch - OFF.

.24. Stabilator - Check.

25. Barometric altimeters - Set.

26. Attitude reference - Check.

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O.27. Blade deice system - Test as required.

28. Avionics - Check and set as required.

*29. GPS/DPLR NAV MODE selector - OFF.

O . *30. Auxiliary fuel management panel - TEST, set as required.

O *31. Deleted.

STARTING ENGINES.

*1. ENG FUEL SYS selector(s) - As required.

XFD for first start of day.

*2. ENGINE IGNITION switch - ON.

*3. GUST LOCK caution - Verify does not appear.

*4. Fire guard - Posted if available.

*5. Rotor blades - Check clear.

*6. Flight controls - Hold.

.* 7. Engine(s) - Start.

* 8. If single-engine start was made, repeat step 7 for other engine.

* 9. Systems - Check.

* 10. BACKUP HYD PUMP switch - AUTO.

. 11. Hydraulic leak test system - Check.

. 12. Tail rotor servo transfer - Check.

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*13. Engine warmup - Check if temperature is below -17°C (1°F).

ENGINE RUNUP.

*1. Deleted.

* 2. ENG POWER CONT lever(s) - FLY.

*3. Droop stops - Check out 70% to 75% RPM R.

* 4. #1 and #2 GEN cautions - Disappear.

O 5. AUX CABIN HEATER switch - As desired.

*6. EH ECS panel switches - As desired.

O. 7. DE-ICE EOT - Check as required.

*8. % TRQ 1 and 2 - Matched within 5%.

O*8.1. FLIR hand controller and display power switch -

ON.

* 9. EH Q/F PWR switch - As desired.

* 10. FUEL PUMP switch - OFF.

* 11. APU CONTR switch - OFF.

* 12. AIR SOURCE HEAT/START switch - As required.

* 13. ENG FUEL SYS selectors - As required.

* 14. SAS 1 - ON.

*15. GPS/DPLR NAV MODE selector - As desired.

*16. Collective friction - As required.

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O *17. CMWS CI PWR switch - ON.

O *17.1. CMWS Safe/Arm control panel AUTO / BYPASS switch - AUTO, verify inventory.

O *18. BFT/EDM - On.

O*19. HUD - Adjust brightness, mode, barometric altitude, pitch, and roll as necessary.

O * 20. EH IINS NAVRDY light flashing - CDU mode select switch to NAV.

O * 21. EH IINS SYSTEMS SELECT switches - IINS.

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* 22. FUEL BOOST PUMP CONTROL switches - Check before every flight to determine oper-ability. Leave on if required.

O . 23. External extended range fuel transfer - Check.

*24. Microc l imate coo l ing sys tem ( i f use i s anticipated) - Check. Turn BCA MCU control knob clockwise and check for leaks; note change in temperature. Adjust to desired cooling position.

. 25. Operational Engine Health Indicator Test/Anti- Ice Bleed and Start Valve Check.

O . 26. IVHMS Operational Engine Health Indicator Test/Anti-Ice Bleed and Start Valve Check.

BEFORE TAXI.

O*1. Ejector rack lock levers unlocked.

O*2. Volcano jettison safety pins - Remove and red arming levers to arm.

O *3. M130 Chaff Dispenser safety pin - Remove.

*4. Chocks - Removed.

*5. Doors - Secure.

*6. PARKING BRAKE - Release.

* 7. TAIL WHEEL switch - As required.

8. Wheel brakes - Check as required.

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HOVER CHECK.

1. Systems - Check cautions/advisories, CDU, and PDU(s) for normal indications.

2. Flight instruments - Check as required.

3. Power - Check. The power check is done by comparing the indicated torque required to h o v e r w i t h t h e p r e d i c t e d v a l u e s f r o m performance charts.

BEFORE TAKEOFF.

* 1. ENG POWER CONT levers - FLY.

* 2. Systems - Check.

* 3. Avionics - As required.

* 4. Crew, passengers, and mission equipment - Secure.

O *5. CMWS C r e w S a f e t y p i n - R e m o v e a s required.

O 6. Auxiliary fuel management panel - Set as required.

AFTER TAKEOFF.

O. 1. Extended range fuel system transfer - As required.

O 2. CMWS AAR-57 Safe/Arm control panel -

ARMED.

O. 3. Volcano mine launch, post mine launch - As required.

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BEFORE LANDING.

1. TAIL WHEEL switch - As required.

2. PARKING BRAKE - As required.

. 3. Crew, passengers, and mission equipment - Secure.

O 4. EIBF Bypass switches - As required.

O 5. Auxiliary fuel management panel switches -

OFF.

O 6. CMWS AAR-57 Safe/Arm control panel -

SAFE.

7. Performance considerations - As required.

AFTER LANDING CHECK.

1. TAIL WHEEL switch - As required.

2. Exterior lights - As required.

3. Avionics/mission equipment - As required.

O 4. CMWS Crew safety pin - Installed and locked.

PARKING AND SHUTDOWN.

1. TAIL WHEEL switch - As required.

2. PARKING BRAKE - Set.

3. FUEL BOOST PUMP CONTROL switches -

OFF.

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4. Landing gear - Chocked.

O 5. Volcano red arming levers - SAFE and jettison safety pins - Install.

O 6. Ejector rack locking levers - Locked.

O 7. M130 Chaff Dispenser Safety Pin - Install.

8. EH IINS SYSTEMS SELECT switches - DG/

VG.

O 9. EH IINS - OFF.

O 10. BFT/EDM - OFF.

O 10.1. FLIR displays and hand controller - STOW, then OFF.

O 11. CMWS CI PWR switch - OFF.

O 12. ECS panel switches - OFF.

O 13. MCUs - Off and vests disconnected.

O 14. AUX CABIN HEATER switch - OFF.

15. SAS 1 - Off.

16. GPS/DPLR NAV MODE selector - OFF.

17. DEICE, PITOT, ANTI-ICE, HEATER and EH Q/F PWR switches - OFF.

18. AIR SOURCE HEAT/START switch - APU.

19. FUEL PUMP switch - APU BOOST.

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20. APU CONTR switch - ON. The APU ON, BACK-UP PUMP ON, and APU ACCUM LOW advisories should appear.

21. Collective raise no more than 1 inch.

22. Deleted.

23. GENERATORS NO. 1 and NO. 2 switches -

OFF.

24. ENG POWER CONT levers - IDLE.

25. ENGINE IGNITION switch - OFF.

26. Cyclic - As required to prevent anti-flap pound-ing.

27. Droop stops - Verify in, about 50% RPM R.

28. BACKUP HYD PUMP switch - OFF.

29. Stabilator - Slew to 0° after last flight of the day.

30. BACK-UP PUMP ON advisory - Check disap-pears.

31. ENG POWER CONT lever - OFF after 2 minutes at Ng SPEED of 90% or less.

32. Remaining ENG POWER CONT lever - OFF after 2 minutes at Ng SPEED of 90% or less.

33. ENG FUEL SYS selectors - OFF.

34. TGT TEMP - Monitor.

35. 701C 701D/CC DEC/EDECU signal valida-tion fault code - Check.

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36. AUX FUEL management panel - Selec t external tanks for pressure refuel ing, as required.

37. Avionics - Off.

O 38. HUD ADJ/ON/OFF switch - OFF.

39. Overhead switches - As required.

40. APU generator switch - OFF.

41. FUEL PUMP switch - OFF.

42. APU CONTR switch - OFF.

43. BATT switch - OFF.

BEFORE LEAVING HELICOPTER.

1. Walk around - Complete, checking for damage, fluid leaks and levels.

2. Mission equipment - Secure.

3. IVHMS DTMU - Remove as required.

3.1. UDM - Remove as required.

4. Complete log book forms.

5. Secure helicopter - As required.

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THRU-FLIGHT CHECKLIST

BEFORE EXTERIOR CHECK.

*1. Helicopter covers, locking devices, tiedowns, and grounding cables - Removed and secured.

*2. Fuel - Check quantity as required.

EXTERIOR CHECK.

NOSE SECTION (AREA 1).

*1. Main rotor blades - Check.

COCKPIT - LEFT SIDE (AREA 2).

*1. Left engine oil level - Check.

*2. Check main landing gear drag beam for cracks.

CABIN TOP (AREA 3).

O *1. Left engine EIBF - Check Maintenance Indica-tor and ensure pin installed.

O *2. Right engine EIBF - Check Maintenance Indicator and ensure pin installed.

*3. Main rotor system - Check.

INTERIOR CABIN (AREA 4).

O *1. Cabin MCU Control - OFF.

O *2. CMWS Crew Safety pin - Instal led and locked.

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FUSELAGE - LEFT SIDE (AREA 5).

O *1. Volcano armament system - Check.

O *2. CMWS Flare dispenser - Check.

*3. Intermediate gear box - Check; oil level.

TAIL PYLON (AREA 6).

*1. Tail rotor - Check.

*2. Tail rotor gear box - Check; oil level.

FUSELAGE - RIGHT SIDE (AREA 7).

O *1. Volcano armament system - Check.

O *2. CMWS Flare dispenser - Check.

COCKPIT - RIGHT SIDE (AREA 8).

*1. Right engine oil level - Check.

*2. Check main landing gear drag beam for cracks.

O *3. MCU Cockpit Control - Verify Off.

.*4. Crew and passenger briefing - Complete as required.

BEFORE STARTING ENGINES.

*1. Copilot’s collective - Extended and locked.

O *2. CMWS CI PWR - OFF.

O *3. CMWS Safe/Arm control panel - Safe.

O *4. Deleted.

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*5. Radar altimeter - Set.

*6. ANTICOLLISION/POSITION LIGHTS - As required.

*7. EH Q/F PWR switch - OFF.

O*8. EH ECS panel switches - OFF.

*9. GENERATORS NO. 1 and NO. 2 switches -

ON.

*10. AIR SOURCE HEAT/START switch - APU (OFF for external air source).

*11. BATT switch - ON.

COCKPIT EQUIPMENT CHECKS.

*1. FUEL PUMP switch - APU BOOST.

*2. APU CONTR switch - ON.

*3. APU generator switch - ON.

*4. EXT PWR switch - OFF and cable discon-nected.

O*4.1. 701C 701D/CC EDECU - Check signal validation code 15%.

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*5. Doppler/GPS - On and program.

O*6. Deleted.

O*7. EH IINS SYSTEMS SELECT switches - DG and VG.

.*8. EH IINS - Align.

O*8.1. A2C2S AIP switches - As required.

O*8.2. ABC2 Audio selector switches - As required.

*9. Deleted.

*10. Avionics - On.

O*11. IVHMS CDU - On. Verify data download, time and percentage displayed.

O.*11.1. Mission equipment - Check.

.*12. Cold weather control exercise - Check if temperature is below -17°C (1°F).

*13. AFCS FAILURE ADVISORY lights - If on, POWER ON RESET.

*14. SAS1 off, SAS2, TRIM, FPS, and BOOST switches - Push ON.

*15. Cyclic centered. Collective, from full down position, raise no more than 1 inch (to prevent droop stop pounding) and friction.

*16. COMPASS swi tch AHRS AHRS Mode - SLAVED. Set as required.

*17. GPS/DPLR NAV MODE selector - OFF.

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O . *18. Auxiliary fuel management panel - TEST, set as required.

O *19. Deleted.

STARTING ENGINES.

*1. ENG FUEL SYS selector(s) - As required.

XFD for first start of day.

*2. ENGINE IGNITION switch - ON.

*3. GUST LOCK caution - Verify does not appear.

*4. Fire guard - Posted if available.

*5. Rotor blades - Check clear.

*6. Flight controls - Hold.

.* 7. Engine(s) - Start.

* 8. If single-engine start was made, repeat step 7 for other engine.

* 9. Systems - Check.

* 10. BACKUP HYD PUMP switch - AUTO.

*11. Engine warmup - Check if temperature is below -17°C (1°F).

ENGINE RUNUP.

*1. Deleted.

* 2. ENG POWER CONT lever(s) - FLY.

*3. Droop stops - Check out 70% to 75% RPM R.

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* 4. #1 and #2 GEN cautions - Disappear.

*5. EH ECS panel switches - As desired.

*6. % TRQ 1 and 2 - Matched within 5%.

O*6.1. FLIR hand controller and display power switch -

ON.

* 7. EH Q/F PWR switch - As desired.

* 8. FUEL PUMP switch - OFF.

* 9. APU CONTR switch - OFF.

* 10. AIR SOURCE HEAT/START switch - As required.

* 11. ENG FUEL SYS selectors - As required.

* 12. SAS 1 - ON.

*13. GPS/DPLR NAV MODE selector - As desired.

*14. Collective friction - As required.

O *15. CMWS CI PWR switch - ON.

O *15.1. CMWS Safe/Arm control panel AUTO / BYPASS switch - AUTO, verify inventory.

O *16. BFT/EDM - On.

O*17. HUD - Adjust brightness, mode, barometric altitude, pitch, and roll as necessary.

O * 18. EH IINS NAVRDY light flashing - CDU mode select switch to NAV.

O * 19. EH IINS SYSTEMS SELECT switches - IINS.

TM 1-1520-237-CL

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* 20. FUEL BOOST PUMP CONTROL switches - Check before every flight to determine oper-ability. Leave on if required.

*21. Microc l imate coo l ing sys tem ( i f use i s anticipated) - Check. Turn BCA MCU control knob clockwise and check for leaks; note change in temperature. Adjust to desired cooling position.

BEFORE TAXI.

O*1. Ejector rack lock levers unlocked.

O*2. Volcano jettison safety pins - Remove and red arming levers to arm.

O *3. M130 Chaff Dispenser safety pin - Remove.

*4. Chocks - Removed.

*5. Doors - Secure.

*6. PARKING BRAKE - Release.

* 7. TAIL WHEEL switch - As required.

BEFORE TAKEOFF.

* 1. ENG POWER CONT levers - FLY.

* 2. Systems - Check.

* 3. Avionics - As required.

* 4. Crew, passengers, and mission equipment - Secure.

O *5. CMWS Crew safety pin - Remove as required.

TM 1-1520-237-CL

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Section I. Aircraft Systems

ENGINE.

SINGLE-ENGINE FAILURE.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. External cargo/stores - Jettison (if required).

If continued flight is not possible:

3. LAND AS SOON AS POSSIBLE.

If continued flight is possible:

4. LAND AS SOON AS PRACTICABLE.

DUAL-ENGINE FAILURE.

AUTOROTATE.

ECU/DEC/EDECU LOW SIDE

FAILURE.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

If partial powered flight cannot be maintained:

2. ENG POWER CONT lever (low % TRQ/ TGT TEMP engine) - LOCKOUT. Maintain % TRQ approximately 10% below other engine.

3. LAND AS SOON AS PRACTICABLE.

E-1 C9

ECU/DEC/EDECU HIGH SIDE

FAILURE.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. ENG POWER CONT lever (high % TRQ/ TGT TEMP engine) - Retard. Maintain % TRQ approximately 10% below other engine.

3. LAND AS SOON AS PRACTICABLE.

If the affected engine does not respond to ENG POWER CONT lever movement in the range between FLY and IDLE, the HMU may be malfunctioning internally.

If this occurs:

4. Perform EMER ENG SHUTDOWN (affected engine).

5. Refer to single-engine failure emergency proce-dure.

E-2 C9

% RPM INCREASING/DECREASING

(OSCILLATION).

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. Slowly retard the ENG POWER CONT lever on the suspected engine.

If the oscillation stops and partial power flight cannot be maintained:

3. Place that engine in LOCKOUT and manually control the power.

4. LAND AS SOON AS PRACTICABLE.

If the oscillation continues:

5. Place the ENG POWER CONT lever back to FLY and retard the ENG POWER CONT lever of the other engine.

If partial power flight cannot be maintained:

6. Place the engine in LOCKOUT, manually control the power.

7. LAND AS SOON AS PRACTICABLE.

E-3 C9

% TRQ SPLIT BETWEEN ENGINES 1

AND 2.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. If TGT TEMP of one engine exceeds the limiter ( 700 850°C, 701C 701D/CC 875°C with low power engine above 50% TRQ or 901°C with low power engine below 50% TRQ), retard ENG POWER CONT lever on that engine to reduce TGT TEMP. Retard the ENG POWER CONT lever to maintain torque of the manually controlled engine at ap-proximately 10% below the other engine.

3. If TGT TEMP limit on either engine is not exceeded, slowly retard ENG POWER CONT lever on high % TRQ engine and observe % TRQ of low power engine.

4. If % TRQ of low power engine increases, ENG POWER CONT lever on high power engine - Retard to maintain % TRQ approximately 10% below other engine (the high power engine has been identified as a high side failure).

5. If % TRQ of low power engine does not increase , or % RPM R decreases , ENG POWER CONT lever - Return high power engine to FLY (the low power engine has been identified as a low side failure).

6. If additional power is required, low power ENG POWER CONT lever, momentarily move to LOCKOUT and adjust to set % TRQ ap-proximately 10% below the other engine.

7. LAND AS SOON AS PRACTICABLE.

E-4 C9

LOAD DEMAND SYSTEM MALFUNC-

TION.

If a load demand system malfunction is detected/ suspected, perform the following:

On ground:

Shut down and consult maintenance.

In flight:

1. LAND AS SOON AS PRACTICABLE.

2. Perform a normal approach, avoiding low power autorotative descents.

ENGINE COMPRESSOR STALL.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

If condition persists:

2. ENG POWER CONT lever (affected engine) - Retard (TGT TEMP should decrease).

3. ENG POWER CONT lever (affected engine) -

FLY.

If stall condition recurs:

4. EMER ENG SHUTDOWN (affected engine).

5. Refer to single-engine failure emergency proce-dure.

E-5 C9

#1 OIL FLTR BYPASS OR #2 OIL FL-

TR BYPASS CAUTION APPEARS.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. ENG POWER CONT lever (affected engine) - Retard (to reduce pressure).

3. LAND AS SOON AS PRACTICABLE.

CHIP #1 ENGINE OR CHIP #2

ENGINE, #1 ENGINE OIL PRESS OR

#2 ENGINE OIL PRESS, #1 ENGINE

OIL TEMP OR #2 ENGINE OIL TEMP

CAUTION APPEARS.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. ENG POWER CONT lever (affected engine) - Retard (to reduce torque).

If oil pressure is below minimum limits or if oil temper-ature remains above maximum limits:

3. EMER ENG SHUTDOWN (affected engine).

4. Refer to single engine failure emergency proce-dure.

E-6 C9

ENGINE HIGH-SPEED SHAFT

FAILURE.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. EMER ENG SHUTDOWN (affected engine).

Do not attempt to restart.

3. Refer to single-engine failure emergency proce-dure.

LIGHTNING STRIKE.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. ENG POWER CONT levers - Adjust as required to control % RPM.

3. LAND AS SOON AS POSSIBLE.

E-7/(E-8 Blank) C9

BLANK

ROTORS, TRANSMISSIONS, AND

DRIVE SYSTEMS.

LOSS OF TAIL ROTOR THRUST IN CRUISE

FLIGHT.

1. AUTOROTATE - Maintain airspeed at or above

80 KIAS.

2. ENG POWER CONT levers - OFF (during deceleration when intended point of landing is assured).

LOSS OF TAIL ROTOR THRUST OR TAIL

ROTOR QUADRANT CAUTION APPEARS

WITH LOSS OF CONTROL AT LOW

AIRSPEED/HOVER (RIGHT ROTATION).

1. Collective - Reduce.

2. ENG POWER CONT levers - OFF (5 to 10 feet above touchdown).

TAIL ROTOR QUADRANT CAUTION AP-

PEARS IN CRUISE FLIGHT.

1. Collective - Adjust to determine controllability (Fixed Right or Left).

2. LAND AS SOON AS PRACTICABLE.

E-9 C9

LOSS OF CONTROL AT LOW AIRSPEED/

HOVER OR TAIL ROTOR QUADRANT CAU-

TION APPEARS (LEFT ROTATION).

1. ENG POWER CONT lever(s) - Retard to decrease %RPM R below 100% and begin a partial power descent.

2. Collective - Adjust to preserve %RPM R.

3. ENG POWER CONT levers - OFF (5 to 10 feet above touchdown).

4. Collective - Adjust for landing.

PEDAL BIND/RESTRICTION OR DRIVE

WITH NO ACCOMPANYING CAUTION.

1. Apply pedal force to oppose the drive.

2. Check other pedals for proper operation.

3. TAIL SERVO switch - BACKUP.

If normal control authority is not restored:

4. TAIL SERVO switch - NORMAL.

5. BOOST switch - OFF.

If normal control forces are not restored:

6. BOOST switch - ON.

7. Collective - Adjust to determine controllability for landing.

8. LAND AS SOON AS PRACTICABLE.

E-10 C6

#1 TAIL RTR SERVO CAUTION APPEARS

AND BACK-UP PUMP ON ADVISORY DOES

NOT APPEAR OR #2 TAIL RTR SERVO ON

ADVISORY DOES NOT APPEAR.

1. TAIL SERVO switch - BACKUP.

2. BACKUP HYD PUMP switch - ON.

3. LAND AS SOON AS PRACTICABLE.

MAIN XMSN OIL PRESS OR MAIN XMSN

OIL TEMP CAUTION APPEARS / XMSN OIL

PRESS LOW / XMSN OIL TEMP HIGH.

1. LAND AS SOON AS POSSIBLE.

If time permits:

2. Slow to 80 KIAS.

3. EMER APU START.

4. GENERATORS NO. 1 and NO. 2 switches -

OFF.

CHIP INPUT MDL LH OR RH CAUTION AP-

PEARS.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. ENG POWER CONT lever (affected engine) -

IDLE.

3. LAND AS SOON AS POSSIBLE.

E-11 C9

CHIP MAIN MDL SUMP, CHIP ACCESS MDL

LH OR RH, CHIP TAIL XMSN OR CHIP INT

XMSN/TAIL XMSN OIL TEMP OR INT XMSN

OIL TEMP CAUTION APPEARS.

LAND AS SOON AS POSSIBLE.

MAIN TRANSMISSION FAILURE.

1. Collective - Adjust only enough to begin a descent with power remaining applied to the main transmission throughout the descent and landing.

2. LAND AS SOON AS POSSIBLE.

E-12

FIRE.

ENGINE FIRE IN FLIGHT.

1. ESTABLISH SINGLE-ENGINE AIRSPEED.

2. ENG POWER CONT lever - OFF (affected engine).

3. ENG EMER OFF handle - Pull.

4. FIRE EXTGH switch - MAIN/RESERVE as required.

5. LAND AS SOON AS POSSIBLE.

ENGINE/FUSELAGE FIRE ON GROUND.

1. ENG POWER CONT lever(s) - OFF.

2. ENG EMER OFF handle(s) - Pull if applicable.

3. FIRE EXTGH switch - MAIN/RESERVE as required.

APU COMPARTMENT FIRE.

1. APU fire T-handle - Pull.

2. FIRE EXTGH switch - MAIN/RESERVE as required.

APU OIL TEMP HI CAUTION APPEARS.

APU CONTR switch - OFF. Do not attempt restart until oil level has been checked.

E-13 C9

ELECTRICAL FIRE IN FLIGHT.

1. BATT and GENERATORS switches - OFF.

2. LAND AS SOON AS POSSIBLE.

SMOKE AND FUME ELIMINATION.

1. Airspeed - 80 KIAS or less.

2. Cabin doors and gunner’s windows - Open.

3. Place helicopter out of trim.

4. LAND AS SOON AS PRACTICABLE.

E-14 C9

FUEL SYSTEM.

#1 OR #2 FUEL FLTR BYPASS CAUTION

APPEARS.

1. ENG FUEL SYS selector on affected engine -

XFD.

2. LAND AS SOON AS PRACTICABLE.

#1 AND #2 FUEL FLTR BYPASS CAUTIONS

APPEAR.

LAND AS SOON AS POSSIBLE.

#1 FUEL LOW AND #2 FUEL LOW CAU-

TIONS APPEAR.

LAND AS SOON AS PRACTICABLE.

E-15

#1 OR #2 FUEL PRESS CAUTION AP-

PEARS.

If the caution appears and the situation is critical:

1. ENG FUEL SYS selector on affected engine -

XFD.

2. FUEL BOOST PUMP CONTROL switch on side being used - ON.

3. LAND AS SOON AS POSSIBLE.

4. EMER ENG SHUTDOWN after landing.

If the caution appears, and the situation is not critical:

1. ENG FUEL SYS selector on affected engine -

XFD.

2. FUEL BOOST PUMP CONTROL switches - NO. 1 PUMP or NO. 2 PUMP - OFF (As ap-plicable).

3. LAND AS SOON AS PRACTICABLE.

#1 AND #2 FUEL PRESS CAUTIONS AP-

PEAR.

1. LAND AS SOON AS POSSIBLE.

2. EMER ENG SHUTDOWN after landing.

E-16 C9

ELECTRICAL SYSTEM.

#1 AND #2 GENERATOR FAILURE (#1 AND

#2 CONV AND AC ESS BUS OFF CAUTIONS

APPEAR).

1. SAS 1 switch - Press off.

2. Airspeed - Adjust (80 KIAS or less).

3. GENERATORS NO. 1 and NO. 2 switches - RESET; then ON.

If cautions still appear:

4. GENERATORS NO. 1 and NO. 2 switches -

OFF.

5. If MCUs are in use: BCA MCU control knobs (pilot, copilot, and crewmembers) - OFF.

6. EMER APU START.

7. SAS 1 switch - ON.

8. LAND AS SOON AS PRACTICABLE.

#1 OR #2 GEN CAUTION APPEARS.

1. Affected GENERATORS switch - RESET;

then ON.

If caution still appears:

2. Affected GENERATORS switch - OFF.

E-17 C2

#1 AND #2 CONV CAUTIONS APPEAR.

1. Unnecessary dc electrical equipment - OFF.

2. LAND AS SOON AS PRACTICABLE.

BATTERY FAULT CAUTION APPEARS.

1. BATT switch - OFF; then ON. If BATTERY FAULT caution appears, cycle BATT switch no more than two times.

If caution still appears:

2. BATT switch - OFF.

BATT LOW CHARGE CAUTION APPEARS.

If caution appears after ac power is applied:

1. BATT switch - OFF; then ON . About 30 minutes may be required to recharge battery.

If caution appears in flight:

2. BATT switch - OFF, to conserve remaining battery charge.

E-18

LFT OR RT PITOT HEAT AND MASTER

CAUTIONS APPEAR OR ARE FLASHING.

If LFT or RT PITOT HEAT and MASTER cautions are flashing:

1. LAND AS SOON AS PRACTICABLE.

If LFT or RT PITOT HEAT and MASTER cautions appear steady:

1. Turn off applicable PITOT HEAT switch.

If caution disappears, then applicable pitot heat has failed:

2. Exit icing conditions.

If LFT or RT PITOT HEAT and MASTER cautions still appear:

3. Set PITOT HEAT switch as needed.

4. LAND AS SOON AS POSSIBLE.

E-18.1/(E-18.2 Blank) C6

BLANK

HYDRAULIC SYSTEM.

#1 HYD PUMP CAUTION APPEARS.

1. TAIL SERVO swi tch - BACKUP ; then

NORMAL.

2. LAND AS SOON AS PRACTICABLE.

#2 HYD PUMP CAUTION APPEARS.

1. POWER ON RESET switches - Simultane-ously press, then release.

2. LAND AS SOON AS PRACTICABLE.

#1 AND #2 HYD PUMP CAUTIONS APPEAR.

LAND AS SOON AS POSSIBLE. Restrict control movement to moderate rates.

E-19 C8

#1 OR #2 HYD PUMP CAUTION APPEARS

AND BACK-UP PUMP ON ADVISORY DOES

NOT APPEAR.

1. Airspeed - Adjust to a comfortable airspeed.

2. BACKUP HYD PUMP switch - ON.

If BACK-UP PUMP ON advisory appears:

3. Refer to #1 HYD PUMP or #2 HYD PUMP caution appears emergency procedure.

If BACK-UP PUMP ON advisory still does not appear:

4. FPS and BOOST switches - Off (for #2 HYD PUMP caution).

5. LAND AS SOON AS POSSIBLE.

#1 OR #2 PRI SERVO PRESS CAUTION AP-

PEARS.

1. SVO OFF switches - Check both are centered.

2. If the caution appears with the SVO OFF switch centered, move the SVO OFF switch to turn off the malfunctioning servo.

3. LAND AS SOON AS POSSIBLE.

E-20 C8

#1 RSVR LOW AND #1 HYD PUMP CAU-

TIONS APPEAR WITH BACK-UP PUMP ON

ADVISORY APPEARING.

1. LAND AS SOON AS PRACTICABLE.

If the BACK-UP RSVR LOW caution also appears:

2. SVO OFF switch - 1ST STG.

3. LAND AS SOON AS POSSIBLE.

#2 RSVR LOW AND #2 HYD PUMP CAU-

TIONS APPEAR WITH BACK-UP PUMP ON

ADVISORY APPEARING.

1. POWER ON RESET switches - Simultane-ously press then release.

2. LAND AS SOON AS PRACTICABLE.

If BACK-UP RSVR LOW caution also appears:

3. SVO OFF switch - 2ND STG.

4. LAND AS SOON AS POSSIBLE.

E-20.1/(E-20.2 Blank) C8

BLANK

#2 RSVR LOW CAUTION APPEARS.

1. BOOST - Off.

2. FPS - Off.

3. LAND AS SOON AS PRACTICABLE.

COLLECTIVE BOOST SERVO HARDOVER/

POWER PISTON FAILURE.

1. BOOST switch - Off.

2. LAND AS SOON AS PRACTICABLE.

PITCH BOOST SERVO HARDOVER.

1. SAS (1 and 2) and FPS switches - Off.

2. LAND AS SOON AS PRACTICABLE.

BOOST SERVO OFF CAUTION APPEARS.

1. BOOST switch - Off.

2. LAND AS SOON AS PRACTICABLE.

E-21/(E-22 Blank) C3

LANDING AND DITCHING.

EMERGENCY LANDING IN WOODED

AREAS - POWER OFF.

1. AUTOROTATE. Decelerate helicopter to stop all forward speed at treetop level.

2. Collective adjust to maximum before main rotor contacts tree branches.

DITCHING - POWER ON.

1. Approach to a hover.

2. Cockpit doors jettison and cabin doors open prior to entering water.

3. Pilot shoulder harness - Lock.

4. Survival gear - Deploy.

5. Personnel, except pilot, exit helicopter.

6. Fly helicopter downwind a safe distance and hover.

7. ENG POWER CONT levers - OFF.

8. Perform hovering autorotation, apply full col-lective to decay rotor RPM as helicopter settles.

9. Position cyclic in direction of roll.

10. Exit when main rotor has stopped.

E-23

DITCHING - POWER OFF.

1. AUTOROTATE.

2. Cockpit doors jettison and cabin doors open prior to entering water.

3. Apply full collective to decay rotor RPM as helicopter settles.

4. Position cyclic in direction of roll.

5. Exit when main rotor has stopped.

E-24 C3

FLIGHT CONTROL/MAIN ROTOR

SYSTEM MALFUNCTIONS.

If the main rotor system malfunctions:

1. LAND AS SOON AS POSSIBLE.

2. EMER ENG(S) SHUTDOWN after landing.

SAS FAILURE WITH NO FAILURE

ADVISORY INDICATION.

1. SAS 1 switch - Off.

If condition persists:

2. SAS 1 switch - ON.

3. SAS 2 switch - Off.

If malfunction still persists:

4. SAS 1 and FPS switches - Off.

SAS 2 FAILURE ADVISORY LIGHT ON.

P O W E R O N R E S E T s w i t c h e s - Simultaneously press and then release.

SAS OFF CAUTION APPEARS.

1. SAS 1 and SAS 2 switches - Off.

2. FPS switch - Off.

3. LAND AS SOON AS PRACTICABLE.

E-25 C5

FLT PATH STAB CAUTION APPEARS.

1. EH SYSTEMS SELECT - DG/VG.

2. P O W E R O N R E S E T s w i t c h e s - Simultaneously press and then release.

If failure returns, control affected axis manually.

If the airspeed fault light remains illuminated on the AFCS panel:

3. Manually slew stabilator - Adjust to 0° if above 40 KIAS. The preferred method of manually slewing the stabilator up is to use the cyclic mounted stabilator slew-up switch.

4. LAND AS SOON AS PRACTICABLE.

PITCH, ROLL, OR YAW/TRIM HARDOVER.

1. P O W E R O N R E S E T s w i t c h e s - Simultaneously press and then release.

If failure returns, control affected axis manually.

2. LAND AS SOON AS PRACTICABLE.

TRIM ACTUATOR JAMMED.

LAND AS SOON AS PRACTICABLE.

E-26 C3

STABILATOR MALFUNCTION - AUTO

MODE FAILURE.

1. Cyclic mounted stabilator slew-up switch - Adjust as required to arrest or prevent nose down pitch rate.

2. AUTO CONTROL switch - Press ON once after establishing a comfortable airspeed.

If automatic control is not regained:

3. Manually slew stabilator - Adjust to 0° for flight above 40 KIAS or full down when airspeed is 40 KIAS or less. The preferred method of manually slewing the stabilator up is to use the cyclic mounted stabilator slew-up switch.

4. LAND AS SOON AS PRACTICABLE.

If manual control is not possible:

5. STAB POS indicator - Check and fly at or below KIAS LIMIT shown on placard.

6. LAND AS SOON AS PRACTICABLE.

E-27 C9

UNCOMMANDED NOSE DOWN/UP

PITCH ATTITUDE CHANGE.

If an uncommanded nose down pitch attitude occurs:

1. Cyclic - Adjust as required.

2. Collective - Maintain or increase.

3. Cyclic mounted stabilator slew-up switch - Adjust as required to arrest nose down pitch rate.

4. MAN SLEW switch - Adjust to 0° at airspeeds above 40 KIAS and full down at airspeeds 40 KIAS or less.

5. LAND AS SOON AS PRACTICABLE.

If an uncommanded nose up pitch attitude occurs:

1. Cyclic - Adjust as required.

2. Collective - Reduce as required.

3. MAN SLEW switch - Adjust to 0° at airspeeds above 40 KIAS and full down at airspeeds 40 KIAS or less.

4. LAND AS SOON AS PRACTICABLE.

E-28 C9

ATTITUDE HEADING REFERENCE

SYSTEM (AHRS) HEADING DEVIA-

TIONS.

If HSI deviation of more than 10° occurs between the HSI and the standby magnetic compass:

1. Set the AHRU Control Unit to DG mode.

2. Manually update the HSI heading using the standby compass.

3. LAND AS SOON AS PRACTICABLE.

E-28.1/(E-28.2 Blank) C7

Section II. Mission Equipment

EMERGENCY JETTISONING.

CARGO REL or HOOK EMER REL switch - Press.

EMERGENCY RELEASE OF

INTERNAL RESCUE HOIST LOAD.

If the internal rescue hoist becomes jammed, inoperative, or the cable is entangled and emergency release is required:

HOIST CABLE CUT.

To cut cable from cockpit:

CABLE SHEAR switch - FIRE.

To cut cable from hoist operator’s position:

CABLE CUT switch - FIRE.

HOIST RUNAWAY.

1. Pilot’s RESCUE HOIST CONTROL panel cable switch - UP or DOWN to control, as required.

If control is not possible:

2. Pilot’s RESCUE HOIST CONTROL panel MASTER switch - OFF.

TM 1-1520-237-CL

E-29 C9

BLADE DE-ICE SYSTEM MALFUNC-

TIONS.

MR DE-ICE FAULT, MR DE-ICE FAIL, OR TR

DE-ICE FAIL CAUTION APPEARS.

1. Icing conditions - Exit.

2. BLADE DE-ICE POWER switch - OFF, when out of icing conditions.

If vibrations increase:

3. LAND AS SOON AS POSSIBLE.

PWR MAIN RTR AND/OR PWR TAIL RTR

MONITOR LIGHT ON.

If a PWR monitor light is illuminated with BLADE DE- ICE POWER switch ON to stop power from being ap-plied to blades:

1. Icing conditions - EXIT.

2. BLADE DE-ICE POWER switch - OFF.

If a PWR monitor light is still illuminated with BLADE DE-ICE POWER switch OFF:

3. GENERATORS NO. 1 or NO. 2 switch - OFF.

4. APU generator switch - OFF (if in use).

5. LAND AS SOON AS PRACTICABLE.

E-30.2 C9

ICE RATE METER OR DCIU FAIL OR INAC-

CURATE.

1. BLADE DE-ICE MODE switch - MANUAL as required.

If vibration levels increase or %TRQ required increases above 14%:

2. BLADE DE-ICE MODE switch - Select higher setting.

If ice buildup continues:

3. LAND AS SOON AS PRACTICABLE.

E-30.3/(E-30.4 Blank) C9

Blank troy.mercier Typewritten Text

LOSS OF NO. 1 OR NO. 2 GENERATOR

DURING BLADE DEICE OPERATION.

1. EMER APU START.

2. BLADE DE-ICE POWER switch - OFF then

ON.

E-31

AUXILIARY FUEL MANAGEMENT

SYSTEM FAILURE TO TRANSFER

SYMMETRICALLY.

When an asymmetric fuel condition (greater than 270 pounds difference for outboard tanks or 375 pounds dif-ference for inboard tanks) is identified or a suspect roll-over vent valve failure is suspected:

If fuel situation is not critical:

1. XFER MODE switch - OFF.

2. LAND AS SOON AS PRACTICABLE.

If fuel situation is critical:

1. XFER MODE switch - MAN.

2. MAN XFER switch - Select heavy tank LEFT or RIGHT until imbalance (IMBAL) condition is corrected.

If the imbalance condition cannot be corrected:

3. XFER MODE switch - OFF.

4. LAND AS SOON AS PRACTICABLE.

Should controlled flight with one heavy external tank become necessary, proceed as follows:

1. Make all turns shallow (up to standard rate), and in the d i r ec t i on away f rom heavy s ide (particularly when a right tank remains full).

2. Avoid abrupt control motions, especially lateral cyclic.

E-32 C6

3. If possible, shift personnel to the light side of the helicopter.

4. Select a suitable roll-on landing area, and make a roll-on landing with touchdown speed in excess of 30 KIAS. To increase control margin, execute the approach into the wind or with a front quartering wind from the heavy side and align the longitudinal axis of the helicopter with the ground track upon commencing the ap-proach. If a suitable roll-on landing area is not available, make an approach to a hover into the wind, or with a front quartering wind from the heavy side.

EXTERNAL STORES JETTISON.

If jettisoning of tanks is required:

1. STORES JETTISON switch - Select INBD BOTH, OUTBD BOTH or ALL as applicable.

2. JETT switch - Actuate.

If primary jettison system does not operate:

3. EMER JETT ALL switch - Actuate.

E-33 C6

FUEL FUMES IN COCKPIT/CABIN

WITH EXTERNAL EXTENDED RANGE

FUEL SYSTEM PRESSURIZED.

If heater is on:

1. HEATER switch - OFF.

If heater is off or fumes persist:

2. PRESS switch - OFF.

3. XFER MODE switch - OFF.

4. FUEL BOOST PUMP CONTROL switches - As required.

VOLCANO LAUNCHER RACKS JET-

TISON.

If jettisoning of launcher rack is required:

1. JETTISON switch - JETTISON.

If jettison procedure above fails, do the following immediately:

2. EMER JETTISON switch - JETTISON.

TM 1-1520-237-CL

E-34 C9

INFLIGHT CABS ACTIVATION.

If inadvertent deployment occurs:

1. If at terrain flight altitude, initiate climb if ap-propriate.

2. CABS circuit breaker - Pull.

3. Fold the deflated forward air bag over the top of the glare shield to minimize flight control and flight instrument interference.

4. Push the lateral air bag down and rear into the space between the armor panel and door.

5. Transfer controls and repeat steps 3. and 4. for other side of helicopter.

TM 1-1520-237-CL

E-37/(E-38 Blank)

DETAILED PROCEDURES

CREW BRIEFING.

A crew briefing shall be conducted to ensure a thorough understanding of individual and team responsibilities. The briefing should include, but not be limited to, pilots, crew chief, mission equipment operator, ground crew responsibili-ties, and the coordination necessary to complete the mission in the most efficient manner. A review of visual signals is desirable when ground guides do not have direct voice com-munications link with the crew.

PASSENGER BRIEFING.

The following guide may be used in accomplishing required passenger briefings. Items that do not pertain to a specific mission may be omitted.

1. Crew introduction.

2. Equipment.

a. Personal, to include ID tags.

b. Professional.

c. Survival.

3. Flight data.

a. Route.

b. Altitude.

c. Time en route.

d. Weather.

4. Normal procedures.

P-1

a. Entry and exit the helicopter.

b. Seating.

c. Seatbelts.

d. Movement in helicopter.

e. Internal communications.

f. Security of equipment.

g. Smoking.

h. Oxygen.

i. Refueling.

j. Weapons.

k. Protective masks.

l. Parachutes.

m. Hearing protection.

n. Aviation life support equipment (ALSE).

5. Emergency procedures.

a. Emergency exits.

b. Emergency equipment.

c. Emergency landing/ditching procedures.

CIRCUIT BREAKERS AND SWITCHES -

SET.

a. Circuit breakers - In.

P-2

b. BFT - Off.

c. Avionics - Off, frequencies set.

c.1. IVHMS - Insert DTMU.

O *d. CMWS CI PWR - OFF.

O *e. CMWS Safe/Arm control panel - Safe.

(1) JETTISON switch - OFF , latch cover closed.

(2) AAR-57 VOLUME - As required.

(3) AUTO/BYPASS switch - AUTO.

(4) CMWS ZEROIZE and GPS ZE- ROIZE switches - OFF, latch covers closed.

O *f. Deleted.

g. BLADE DEICE POWER switch - OFF.

*h. Radar altimeter - Set.

i. BACKUP HYD PUMP switch - AUTO.

*j. ANTICOLLISION/POSITION LIGHTS

- As required.

*k. EH Q/F PWR switch - OFF.

O *l. EH ECS panel switches - OFF.

m. CARGO HOOK EMERG REL switch - OPEN, ARMING switch - SAFE.

TM 1-1520-237-CL

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n. A P U C O N T R s w i t c h - O F F ; A P U T-handle - In.

*o. G E N E R A T O R S N O . 1 a n d N O . 2 switches - ON.

p. Ground power unit - Connected if required.

*q. AIR SOURCE HEAT/START switch - APU (OFF for external air source).

r. EMER OFF T-handles - Full forward.

*s. BATT switch - ON.

O t. FLIR hand controller and display power switch - OFF.

EH STARTING PROCEDURE (IINS NORMAL

ALIGNMENT).

1. Ensure that the circuit breakers are in.

2. IINS mode select switch - NORM.

3. Page selector switch - POS.

4. Verify line 7 on right side display indicates desired COORDINATE SYSTEM (UTM or

TM 1-1520-237-CL

Pages P-4.1/(P-4.2 Blank) deleted.

P-4 C6

3. MODE 2 operation. Selecting MODE 2 the operator will hear an abbreviated synthetic voice audio e.g., the AN/APR-39A will announce;

9MISSILE 12-O’CLOCK TRACKING9. If a laser signal is processed, the operator will hear e.g., 9LASER RANGING,9 9LASER, LASER DESIGNATING,9 or 9LASER, LASER BEAM- ING.9 Selection of this mode does not have any effect on emitters received, processed, or displayed; it only affects synthetic voice audio.

CARGO HOOK SYSTEM.

OPERATION…