T-45C TS, ADV & IUT ENG-27/ENG-28
Engineering Review
c.
Radar altimeter
5.
26 VAC essential bus: equipment powered
a.
Airborne data recorder
b.
TACAN-azimith computer
6.
26 VAC non-essential bus: equipment powered
a.
HUD
b.
VOR/ILS/MB
c.
Control augmentation
7.
28 VAC essential bus - left and right console lights
8.
6 VAC essential bus - NAV lights (wing)
9.
6 VAC non-essential bus - formation lights
10. 5 VAC non-essential bus - main instrument panel
lights
D.
Electrical system malfunctions
1.
Generator failure 1.8.1.3.1.1.1
Sg 5, fr 36
Generator Failure
a.
Generator failure: can be described as either
undervoltage or overvoltage condition
(1) At 25 volts or less deenergizes, illuminating
the GENERATOR warning light
(a) On aircraft 165456 and below without
AFC 199
(i)
Activates relay disabling one
inverter illuminating AC INV
caution light
(ii) Activates relay disconnecting non-
essential AC bus
(9-98) Original
Page 27-13
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