T-45A UJPT, E2-C2, ADV, & IUT Eng-24
Engine Start Procedures
2.
ENGINE switch
a.
Location: left console, aft of throttle,
both cockpits
b.
Description: three-position switch
marked ENGINE - START/ON/OFF
(1) START (spring-loaded to ON):
(a) Accelerates GTS from idle to
full power
(b) Opens start valve to admit air
to air turbine starter (ATS)
(c) Closes start air dump valve
(d) Completes electrical circuit to
engine igniters
(2) ON: energizes start control unit
(3) OFF: manually shuts down GTS
operation and deenergizes start
control unit (leave switch in OFF
for 5 seconds)
3.
GTS start button
Sg 1, fr 4
a.
Location: mounted on front of throttle
grip handle, both cockpits
b.
Description: momentary press switch
NOTE: The GTS button will fire the
engine igniters, with weight-on-wheels,
for duration of press.
GTS START BUTTON
NOTE: The GTS button is tied directly
to the engine igniters and GTS igniters.
NATOPS warns that if it is suspected
throttle has been out of OFF position
since aircraft was last shut down, fuel
Page 24-4
(8-03) Original
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