T-45C TS, ADV & IUT ENG-27/ENG-28
Engineering Review
CAUTION: Secure engine if start EGT
limit is rapidly approached and
appears likely to be exceeded.
Sg 14, fr 13
(5) TGT and RPM indicators - MONITOR
Engine Start Sequence
Ensure GTS and READY advisory lights go
out at approximately 45% rpm
NOTE: TGT, rpm, and fuel flow indications
must be closely monitored throughout the
engine starting sequence to ensure safe
starting and to prevent engine damage.
(a) EGT indications during starting phases
(i)
Rises rapidly to approximately
300-350 degrees C
(ii) Rate of rise should slow above
350 degrees C
(iii) Normal starting EGT peaks at
approximately 400-450 degrees C
NOTE: Maximum EGT should not
exceed 550 degrees C. (570
degrees with a 10-second
overshoot)
(b) RPM climbs rapidly toward, and should
reach, 52% within 30 seconds of IDLE
selection
NOTE: If 45% N2 RPM not attained
within 45 seconds from release of the
start switch, the GTS will return to idle.
(c) Fuel flow slowly rises with rpm to idle
flow of 300-400 pph
(9-98) Original
Page 27-143
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