BHT-412-MM-2
5-00-00
01 JUN 2018 Rev. 26 Page 213
Export Classification C, ECCN EAR99
5-41. AFTER COMPRESSOR STALL OR SURGE
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
Accomplish after engine compressor stall or surge.
Discuss circumstances of reported compressor stall
with pilot. Determine N
1
speed at which reported
stall occurred. Check helicopter and engine logs for
any pertinent history.
AFTER ENGINE COMPRESSOR STALL OR SURGE
Engine compressor stall or surge is characterized by a sharp
rumble or a series of loud sharp reports, severe engine
vibration, and a rapid rise in Inter-Turbine Temperature (ITT),
depending on severity of surge. When a surge has been
reported, progressively perform step 1 through step 3, as
dictated by discrepant conditions.
Components removed from a helicopter for evaluation
following a compressor stall or surge 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.
If overhaul evaluation is specified, complete both
the conditional inspection and normal inspection
procedures (as applicable) for that component
listed in BHT-412-CR&O.
To Next Page
Loading...
Need help?
General
