HELICOPTER AND SYSTEMS BEFORE STARTING …

1 TM 55-1520-210-CLUH-1H/V HelicoptersTM 55-1520-210-CL13 February 1997 This manual supersedes TM 55-1520-210-CL,27 December 1990, including all AND - Posted if blades - Check clear and key lock switch - - Set for - switch - MAIN , locking devices, tiedowns, andcables - Remove except main rotor - circuit breakers - switch - ON; Check - On; check, then - Check sample - Check as book - Check as switch - Controls - rotor blade - (Area 1) - (Area 2) - SYSTEMS - compartment - boom - rotor - rotor blade - rotar gearboxes - boom - exhaust/smoke generator - cooling fan and heat compartments - compartment - fluid sight gage - - rotor system - area - CHECK - Oil level - area - and passenger briefing - STARTING switches and circuit breakers - - Connect for GPU gage - warning indicator light - to test caution/warning instruments - pedestal switches - controls - Altimeters - ENGINE7.

2 Engine and transmission oil pressure - GPU - RUNUP1. Avionics - STARTER GEN switch - STBY SYSTEMS - RPM - Avionics and flight instruments - Check and HIT check - CHECK1. Engine and transmission instruments - Flight instruments - Power - Check as TAKEOFF1. RPM - SYSTEMS - Avionics - As Crew, passengers, and mission equipment - LANDING1. RPM - Crew, passengers, and mission equipment - SHUTDOWN1. Throttle - Idle two FORCE TRIM switch - : Steps 3 through 7 are for the last flight of the day if PITOT HTR - switch - OFF, then voltmeter - MAIN GEN switch - OFF; check DC MAIN GEN switch - STARTER GEN switch - Throttle - Center pedestal switches - Overhead switches - Ignition key lock switch - As LEAVING THE HELICOPTER1.

3 Walk-around - Mission equipment - Complete DA Forms 2408-12 and Secure CHECKLISTBEFORE EXTERIOR CHECKS1. Covers, locking devices, tiedowns, and cables - Fuel - Check CHECK1. Main rotor blade - Armament SYSTEMS - Tail rotor - Main rotor blade - Tail rotor gearboxes - Engine compartment - Hydraulic fluid sight gage - Armament system - Main rotor system - CHECK - CABIN1. Transmission oil level - Cabin area - Crew and passenger briefing - STARTING ENGINE1. EXT LTS switches - BAT switch - GPU - Connect for GPU FUEL switches - ENGINE1. Fire guard - Posted if Rotor blades - Check clear and Ignition key lock switch - Throttle - Set for Engine - INVTR switch - MAIN GPU - Engine and transmission oil pressures - RUNUP1.

4 Avionics - STARTER GEN switch - STBY SYSTEMS - RPM - Avionics and flight instruments - Check and Engine and transmission instruments - Power - Check as TAKEOFF1. RPM - SYSTEMS - Avionics - AS Crew, passengers and mission equipment - Order of the Secretary of the Army:DENNIS J. REIMERG eneral, United States ArmyChief of StaffAdministrative Assistant to theSecretary of the Army033041To be distributed in accordance with DA Form 12-31-E, block , requirements for TM 55-1520-210-CLTM 55-1520-210-CLEMERGENCY PROCEDURESENGINE MALFUNCTION - MALFUNCTION - LOW ALTITUDE/LOWAIRSPEED OR CRUISE1. EMER GOV RESTART - DURING FLIGHT1. Throttle - STARTER GEN switch - FUEL switches - GOV switch - Attempt Land as soon as COMPENSATOR FAILUREEMER GOV COMPRESSOR STALL1.

5 Collective - DE-ICE and BLEED AIR switches - Land as soon as OVERSPEED1. Collective - Throttle - EMER FOV AND DRIVE SYSTEMMALFUNCITONSTRANSMISSION OIL - HOT OR LOW PRESSURE1. Land as soon as EMER SHUTDOWN after LOSS OF TAIL ROTOR THRUST1. In-flight - Hover - DRIVESHAFT FAILURE1. EMER FAILS TO DISENGAGE1. Throttle - Land as soon as FAILS TO RE-ENGAGE1. EMER BOUNCE1. Relax Make a significant collective Increase collective ENGINE START1. Start switch - Throttle - FUEL switches - GROUNDEMER SHUTDOWN* GOVERNMENT PRINTING OFFICE: 1997-554-121/60021 FIRE FLIGHTa. Power- Land as soon as EMER SHUTDOWN after Power - EMER FIRE - FLIGHT1. BAT. STBY. MAIN GEN switches - Land as soon as landing cannot be breakers - each of the following steps are accomplished,check for source of GEN switch - GEN switch - STBY switch - Circuit breakers - In one at a time in priority required.

6 GEN &BUS REST first. When malfunctioning circuit is identified,pull applicable circuit BATTERY1. BAT switch - Land as soon as EMER SHUTDOWN after AND FUME ELIMINATION - COCKPIT ANDCABIND oors, Windows, and Vents - POWER FAILURE1. Airspeed - HYD CONT circuit breaker - hydraulic power is not HYD CONT circuit breaker - CONT switch - Land as soon as possibleCONTROL STIFFNESS1. HYD CONT switch - OFF then control response is not restored:2. HYD CONT switch - Land as soon as CONTROL SERVO HARDOVER1. HYD CONT switch - select opposite Land as soon as CONTROL/MAIN ROTOR SYSTEMMALFUNCTIONS1. Land as soon as EMER SHUTDOWN after BUMPING1. Reduce severity of Land as soon as SYSTEMFUEL BOOST PUMP FAILUREIf both FUEL BOOST caution lights illuminate:1. Check fuel fuel pressure is zero:2.

7 PA - 4600 ft or Land as soon as SYSTEMMAIN GENERA-OR & BUS RESET circuit breaker - GEN switch - RESET then main generator is not restored or if it goes off GEN switch - - POWER doom - Jettison at a doors - (except pilot) and passengers - a safe distance away from - Off and - Exit when main rotor has - POWER OFF1. Cockpit Doors - Jettison prior to entering Cabin Doors - Open prior to entering Exit when main rotor has - CAUTION LIGHTSLIGHTCORRECTIVE ACTIONAUX FUEL LowDC GENERATORINST INVERTEREXTERNAL POWERXMSN OR PRESSLand as soon as OR HOTLand as soon as INLET AIRCHIP DETECTORLand as soon as BOOST20-MIN FUELIFFENG OIL PRESSLand as soon as CHIP DETGOV EMERENG ICE DETLand as soon as FUEL PUMPENG ICINGFUEL FILERHYD PRESSUREMASTER CAUTIONC heck the CAUTION panel for thecondition.

8 If master caution only (nosegment light): Land as soon AUX FUEL switches - emergency to other as soon as as soon as as soon as as soon as as soon as as soon as as soon as as soon as : 022121-000