TM 1-1520-238-23
6-400
6.91.
MAIN ROTOR AIR DATA SYSTEM (ADS) MAST REPAIR (AVIM)
6.91.1. Description
This task covers:
Disassembly. Cleaning. Inspection. Assembly.
6.91.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
0.002 - 0.040-inch gap setting gage (item 147, App H)
Chemical protective gloves (item 154, App H)
Materials/Parts:
Packing (3)
Petrolatum (item 138, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 9-1230-476-20-1
Equipment Conditions:
Ref
Condition
TM 9-1230-476-20-1
Omnidirectional airspeed
sensor (OAS) removed
WARNING
FLIGHT SAFETY PART
The main transmission drive shaft and mast are flight safety parts. Failure to follow
maintenance instructions may result in serious injury or death of crewmembers and/or serious
damage to the helicopter.
GO TO NEXT PAGE