T-45C TS, ADV & IUT ENG-19
Flight Instruments
e.
Optimum AOA for cruise index
f.
AOA pointer
4.
Subsystem interfaces
a.
The indicators require 28 VDC essential
services bus power for indicator operation and 5
VAC non-essential bus power for indicator
lighting
b.
Front cockpit AOA indicator
(1) Provides signals to illuminate external
approach lights
(2) Provides signal to both cockpit approach
indexers
(3) Provides signal to stall warning device
c.
Rear cockpit indicator provides AOA display
only
B.
AOA indexer
Sg 7, fr 5
AOA Indexer
1.
Location: top of each glare shield above AOA
gauge
2.
Function: provides second visual AOA display and
warning when arresting hook is not extended during
carrier operations
a.
Indexer assembly contains three independent
indexer lights
(1) Upper chevron green light indicates slow
airspeed or high AOA
(2) Center donut amber light indicates on-
speed or correct AOA
(3) Lower chevron red light indicates fast
airspeed or low AOA
Original (9-98)
Page 19-18
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