Textron Bell 212 - 5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE

BHT-212-MM-1
5-00-00
26 JUN 2013 Rev. 14 Page 213
Export Classification C, ECCN EAR99
CONDITIONAL INSPECTIONS
5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
NOTE
Accomplish inspection after engine compressor stall
or surge.
AFTER ENGINE COMPRESSOR STALL OR SURGE
NOTE
Discuss circumstances of reported compressor stall
with pilot, if possible. Determine N
1
(GAS PROD)
speed at which reported stall occurred. Check
helicopter and engine logs for any pertinent history.
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
Interturbine Temperature (ITT), depending on
severity of surge. When a surge has been reported,
progressively perform the following inspections 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.