BHT-206L3-MM-1
5-00-00
Page 174 Rev. 21 7 JUN 2013 Export Classification C, ECCN EAR99
(3) Transmission top case.
(4) Transmission mount fittings at upper attachment
points and lower stop mounts.
(5) Cabin roof and beam at transmission restraint
support assembly attachment points.
(6) Cabin roof and beam at nodal beam support
attachment points.
(7) Tail rotor hub, blades, and attachments.
b. Examine the transmission electric chip detectors for
accumulated material.
c. Remove, disassemble, and inspect main driveshaft
couplings for indications of wear and overheating (grease
lubricated). For 206L3+ IGW Upgrade helicopters, remove and
examine the engine to transmission KAflex driveshaft for
deformation and cracks. If deformation, cracks, or other
damage is found, discard the driveshaft.
A QUALIFIED PERSON MUST BE AT THE
HELICOPTER CONTROLS DURING THE
FOLLOWING PROCEDURE.
BHT-206L3-FM-1
(BHT-206L4-FM-1 for
206L3+ IGW Upgrade
helicopters)
d. Start engine and check main rotor, while in a flat pitch
condition, for any evidence of a 1/rev vibration or lateral
vibration.
BHT-206A/B/L-Series-
CR&O, Chapter 63
e. If one or more of the previous inspection requirements,
step a through step d, reveals an unsatisfactory condition, a
mast runout inspection shall be performed.
Rolls-Royce 250-C30
Series Operation and
Maintenance Manual,
14W2
2. Refer to the Rolls-Royce 250-C30 Series Operational and
Maintenance Manual for applicable inspection.
5-56. OVERTORQUE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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