T-45A UJPT, E2-C2, ADV, & IUT Eng-17
ECS/Pressurization System & OBOGS
B.
Engine inputs: fifth-stage bleed air
1.
Cockpit air conditioning
a.
Defog
b.
Temperature control
2.
Pressurization system
Sg 4, fr 2
3.
Avionics cooling system
4.
Ram air vent system control
C.
Centralized warning system (CWS) outputs
1.
CABIN ALT warning light
WARNING/CAUTION LIGHT PANEL
2.
AVIONICS HOT caution light
Sg 5, fr 1
V.
Major OBOGS components 1.4.16.3.1
Lesson Organization
A.
OBOGS bleed-air shutoff valve: located on
Sg 5, fr 2 (5 overlays)
upper left side of fifth-stage engine compressor
B.
Heat exchanger: located on auxiliary equipment
rack, aft of rear cockpit
C.
Temperature switch: located in auxiliary
compartment, aft of rear seat
D.
Oxygen concentrator: located in nose
OBOGS
equipment compartment
Overlay 1
Heat Exchanger
E.
Plenum: located between cockpits, below and
forward of aft cockpit rudder pedals
Overlay 2
Temperature Switch
F.
Oxygen monitor: located left side of fwd
Overlay 3
ejection seat bulkhead
Oxygen Concentrator
Overlay 4
G. Ejection seat (oxygen/communications hose):
Plenum
both cockpits
Overlay 5
Oxygen Monitor
Page 17-12
(8-03) Original
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