Hydraulic Subsystems
T-45A UJPT, E2-C2, ADV, & IUT Eng-13
(v)
Parking brake handle in
(OFF)
These conditions are met
only when the aircraft is
locked in the shuttle and
ready for launch. Brake
pressure is returned two (2)
seconds after the launch bar
position switch senses that
the launch bar is in the UP
position. Reducing the
throttle below 95% will
restore brake pressure
immediately. Although not
recommended, pulling the
parking brake handle out/or
pressing and holding the
NWS (high-gain) button will
also restore brake pressure
immediatley.
NOTE: A failure of a
component of the brake
pressure release system will
NOT result in damage or
failure of any component of
the brake or anti-skid
systems. With the throttle
below 95%, there is no
single point failure that will
result in the loss of brakes
during field or carrier
landing, field or carrier taxi,
or field takeoff.
NOTE: Activation of the
parking brake handle
deactivates the brake
pressure release system by
removing electrical power,
deactivating the release
circuit, and applying parking
brake pressure
Page 13-30
(8-03) Original
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