Hydraulic Subsystems
T-45A UJPT, E2-C2, ADV, & IUT Eng-13
b.
Purpose: amber light illuminated when
any hydraulically operated gear door is
not closed and locked during either
gear-up or gear-down cycles
6.
WHEELS warning light/Landing Gear
warning tone
a.
Location: right of AOA indexer, both
cockpits
b.
Purpose: red light illuminates flashing
and the wheels warning tone pulses on
and off every 200 milliseconds when:
(1) LDG GEAR handle is not set to
DN, the throttle is below 95% N2
rpm position and either of the
following exists
(a) Altitude is less than 7,200 ft
MSL (may occur as high as
9,800 ft) and the airspeed is
less than 170 kts
(b) The FLAPS/SLATS levers are
not in the UP position
7.
TONE button
a.
Location: left of LDG GEAR UP/DN
handle, both cockpits
b.
Purpose: silences landing gear
warning tone
C.
Operation
1.
Both NLG and MLG are electrically
controlled and hydraulically operated
2.
Powered by 3,000 psi pressure from HYD 1
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