CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 245
Revision 34
05-50-00
Table 209. Transmission and Drive System Overtorque (902 CONFIG), Conditional Inspection.
Both Engines Operative, 8% Maximum Engine Torque Differential (Cont.)
Registration No. Serial No. Helicopter Total Hours
Model Initial
Ref. RMM
Section
Requirement
Averaged Input 146% and Above
900 Remove and examine anti−torque fan drive shaft, do not disassemble
drive shaft assembly:
Examine coupling to shaft interface for damage or cracking.
Examine fastener holes for corrosion, elongation, and fretting.
Replace if a discrepancy is found.
63−10−00
900 Examine anti−torque fan input flange for corrosion, hole elongation,
and fretting. Replace if a discrepancy is found.
64−30−00
900 Replace all anti−torque drive shaft fasteners. 63−10−00
900 Replace transmission, all acoustic isolators, and related fasteners. 63−20−00
900 Replace drive plate fasteners. 63−10−00
900 Replace main rotor drive shaft, if not PN 900D2436530−101. 63−10−00
900 Examine main rotor drive shaft PN 900D2436530−101. 63−10−00
900 Examine main rotor drive shaft and drive plate for cracked or broken
spline teeth. If found replace:
Main rotor drive plate
Main rotor drive shaft
Main rotor drive plate cover and fasteners
63−10−00
900 Examine drive plate for:
Fastener hole elongation
Material displacement at or around fastener holes
Pitting or fretting around fastener holes
Corrosion
Replace if a discrepancy is found.
63−10−00
900 Do a magnetic particle inspection of the main rotor drive plate for
cracks or related damage. If found replace:
Main rotor drive plate
Main rotor drive plate cover and fasteners
63−10−00
900 If recorded pedal position is more than 38%, replace:
Main rotor drive shaft
Main rotor drive plate
Main rotor drive plate cover
Main rotor drive plate and cover fasteners
63−10−00
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