BHT-206A/B-SERIES-MM-1
5-00-00
Export Classification C, ECCN EAR99
5-60. PYLON WHIRL
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
PYLON WHIRL
Perform pylon whirl inspection following pilot report
or evidence of abnormal landing, excessive slope
landing, operation in severe turbulence, low rotor
RPM during flight (power ON or OFF), rapid and
extreme cyclic input, excessive spike knock, or main
driveshaft contact with isolation mount.
Chapter 63 1. Do a pylon whirl inspection.
30 APR 2013 Rev. 14 Page 199/200
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