TM 1-1520-238-MTF
Change 5
2-84
PROCEDURE
TROUBLESHOOTING
REFERENCE
FLIGHT CHECKS (CONT)
NOTE
The Contingency Power portion (8.2.g.) of
the TGT Limiter/Contingency Power check
may be accomplished in conjunction with
the Maximum Power check providing the
last engine was TGT limited and not NG lim-
ited.
k. PWR lever, non-test engine – FLY.
l. Repeat steps a. thru k. for opposite
engine as required.
m. To establish the engine torque
factor (ETF) and aircraft torque
factor (ATF), refer to
TM 55-2840-248-23.
8.1. Engine Performance Check, Maximum
Power, Non-Limiting method.
WARNING
A safe AGL altitude must be maintained
to allow sufficient reaction time if the en-
gine being tested fails, or if other emer-
gency situations occur.
CAUTION
To avoid torque oscillations when mak-
ing performance checks, a torque split of
at least 10% will be held between en-
gines.
