T-45A UJPT, E2-C2, ADV, & IUT Eng-26
Engineering Review
parking brake handle in, and
the NWS button not
depressed
(b) When the above conditions
are met, the brake pressure
release systems energizes
the anti-skid valve in the anti-
skid system, dumping brake
pressure. If a failure occurs in
the system that results in
brake pressure being
available in the catapult, the
BRAKE PRESS caution light
on the CWP will illuminate. If
that occurs, catapult launch
should be suspended
(c) At the end of the catapult
shuttle travel, the launch bar
is released and automatically
retracted. A two (2) second
delay built into the launch bar
circuit inhibits immediate
application of brake pressure
to the wheel brakes should a
pilot have his feet on the
brakes when the launch bar is
retracted. In the event of a
holdback fitting failure, the
pilot will have to wait for the
launch bar to retract and two
(2) seconds to expire before
braking attempts will be
successful. If this occurs,
reducing the throttle below
95 percent will restore brake
pressure immediately.
Although not recommended,
pulling the parking brake or
pressing and holding the
NWS high-gain button will
also immediately restore
brake pressure
Page 26-39
(8-03) Original
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