Engine Start Procedures
T-45A UJPT, E2-C2, ADV, & IUT Eng-24
2.
Low
a.
Any EGT indication well below normal
(hung start)
B.
RPM
1.
During start
a.
RPM stagnation below 45% with slow
EGT rise (hung start); hung start will
eventually turn into a hot start
b.
Slowly rising rpm with rapidly rising
EGT that appears likely to exceed
maximum EGT (hot start)
2.
IDLE
a.
N2 rpm not within 55 +/- 2% (bleed
valve closed)
b.
Any sudden changes in idle rpm
NOTE: Deviations in engine idle rpm
may occur due to any one or a
combination of the following:
generator loading, bleed valve open or
closed, external bleed air demands,
hydraulic loading, and altitude
adjustments of approximately 1% rpm
increase for every 1,500 ft above sea
level.
C.
Low battery voltage: below 24 VDC prior to start
D.
ROTATION advisory light: failure to illuminate
within 15 seconds of placing ENGINE switch to
START
E.
Fuel flow: abnormal indications normally
accompanied by high or low EGT and rpm
indications
(8-03) Original
Page 24-17
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