Engine Start Procedures
T-45A UJPT, E2-C2, ADV, & IUT Eng-24
CAUTION: Light-off must occur within
15 seconds after advancing throttle to IDLE
(straight slot, no horn to come around).
CAUTION: Secure engine if start EGT limit
is rapidly approached and appears likely to
be exceeded (550 degrees maximum with
570 degrees overshoot for 10-second
maximum).
5.
EGT and RPM indicators - MONITOR
Ensure GTS and ROTATION advisory
Overlay 5
lights go out at approximately 45% rpm
EGT Indications
NOTE: EGT, 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 phase
(1) Rise rapidly to approximately
300-350 degrees C
(2) Rate of rise should slow above
350 degrees C
(3) 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
Overlay 6
of IDLE selection
RPM Indications
NOTE: If 45% N2 rpm is not attained
within 45 seconds from release of the
ENGINE switch, the GTS will return to
idle.
(8-03) Original
Page 24-13
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