T-45C TS, ADV & IUT ENG-26
Engine Start Procedures
I.
OIL PRESS warning light: if the OIL PRESS warning
light fails to go out or illuminates during the start
sequence, it indicates inadequate oil pressure differential
J.
FIRE warning light: the FIRE warning light indicates an
engine bay fire has been detected. The MASTER
ALERT caution light flashes and the warning tone will
accompany the warning light.
K.
GTS FIRE warning light: the GTS FIRE warning light
indicates a GTS bay fire has been detected. The
MASTER ALERT caution light flashes and the warning
tone will accompany the warning light.
L.
GTS and READY advisory light remaining on: if the GTS
or READY advisory lights do not extinguish with engine
rpm above 45%, the GTS and engine ignition have not
shut down; this is an unacceptable condition for engine
start.
PROGRESS CHECK
Question 3 — 1.5.3.1.2.3
Describe the difference between the indications of a hung
start and a wet start.
ANSWER:
1. A hung start is indicated by stagnated rpm below 52% and
with slowly rising EGT.
2. A wet start is indicated by fuel flow and no EGT rise within
15 seconds of setting throttle to IDLE.
Question 4 — 1.5.3.1.2.3
During engine start, you observe a rapidly climbing EGT
that appears likely to exceed the maximum EGT (550
degrees C). Identify what this indicates and list three
causes.
ANSWER: This indicates a hot start and can be caused by
wind blowing up the tailpipe, starting a hot engine, or high
ambient air temperature.
(9-98) Change 3
Page 26-20
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