T-45A UJPT, E2-C2, ADV, & IUT Eng-17
ECS/Pressurization System & OBOGS
(2) MANUAL (spring-loaded to
center): cockpit temperature is
manually controlled by positioning
and holding knob at desired COOL
or WARM position (6-12 seconds
from full cold to full hot and vice
versa)
2.
CABIN ALT warning light (WCP): Indicates
Sg 3, fr 3
air conditioning system failure caused by
CABIN ALT Warning Light
overpressure to CAU compressor, CAU
compressor outlet temperature above
500 degrees F, CAU turbine inlet
temperature above 250 degrees F, or
cockpit pressurization failure when CABIN
pressure altimeter indication exceeds
24,500 +/- 500 ft MSL
B.
Cockpit pressurization system
Sg 3, fr 4
1.
Canopy control lever safety catch
a.
Press outboard: deflates canopy seal
b.
Close: Inflates canopy seal if the
canopy is closed
CANOPY SAFETY CATCHES
2.
CABIN ALT warning light (WCP): indicates
cockpit pressurization failure. Illuminates
Sg 3, fr 5
when cabin pressure altimeter exceeds
CABIN ALT Warning Light
24,500 +/- 500 ft MSL indication
Sg3, fr 6
Cabin Pressure Altimeter
3.
Cabin pressure altimeter: Indicates cockpit
pressure altitude
Sg 3, fr 7
C.
Avionics equipment cooling system: AVIONICS
HOT caution light illuminates when air
temperature in avionics cooling air duct exceeds
67 degrees C (153 degrees F). Light illuminates
only when the aircraft is on the ground
NOTE: In the event of an AVIONICS HOT
caution light, opening the canopy will redirect
AVIONICS HOT CAUTION LIGHT
ECS air from defog to the avionics.
Page 17-10
(8-03) Original
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