BHT-206L4-MM-1
5-00-00
25 FEB 2011 Rev. 13 Page 147
ECCN EAR99
5-51. SUDDEN STOPPAGE/ACCELERATION — MAIN ROTOR
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
SUDDEN STOPPAGE/ACCELERATION
Sudden stoppage/acceleration is defined as any rapid
deceleration or acceleration of the drive system whether caused
by seizure within the drive system, sudden freewheel clutch
engagement, or impact of the main rotor with the ground or with
a foreign object of sufficient inertia to cause rapid deceleration.
Components removed from helicopter for evaluation
following a sudden stoppage/acceleration shall be
evaluated as an interrelated group. Removal records
accompanying each component shall
cross-reference part and serial numbers of other
drive system components removed for evaluation.
1. After sudden stoppage, inspect main rotor blades as
follows:
a. Remove tip cover plate from both main rotor blades.
b. Inspect blade skin and bonded doublers for visible
damage.
c. Check tip weights. If any movement of tip weights has
occurred, blade shall be scrapped.
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