T-45A UJPT, E2-C2, ADV, & IUT Eng-21
CNI System
b.
Generates six different tones in
response to inputs from various
systems, including the MSTR TEST
switch
(1) Warning tone: in conjunction with
illumination of warning (red) light
on warning/ caution light panel
(WCP), the FIRE warning light, or
L BAR warning (red) light
(2) Caution tone: in conjunction with
illumination of caution (amber) light
on WCP
(3) Wheels warning tone in conjunc-
tion with a red wheels warning light
on the right side of the AOA in-
dexer in both cockpits: indicates
LDG GEAR handle is not set to
DN, the throttle is below 95%
N2 rpm position, and either of the
following conditions exists:
(a) Altitude is less than 7,700 ft
MSL, and the airspeed is less
than 170 KIAS, or
(b) The FLAPS/SLATS levers are
not in the UP position
(4) Weapon release tone: sounds
when weapon pickle button is
depressed
(5) Simulated gunfire tone: generated
when trigger is depressed and
armament control system (ACS) is
armed for guns
(6) Stall warning tone: indicates
impending aircraft stall, associated
with rudder pedal shaker
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