T-45A UJPT, E2-C2, ADV, & IUT Eng-19
Flight Instruments
b.
Heading (HDG) set knob drives
heading bug around compass card
NOTE: The heading bug serves no
purpose other than to act as a heading
marker.
c.
HSI fail switch on NAV TRNG panel in
fwd cockpit used to fail aft HSI for
training purposes
4.
Subsystem interfaces (both HSIs)
a.
Power
(1) 115 VAC essential bus
(2) 26 VAC essential bus
(3) 28 VDC generator bus (course
NOTE: Losing the generator may
mean unreliable readings. The
OFF flag will appear, but heading
information should still be valid.
Be sure to cross-check the
standby compass.
b.
Receives heading information from
SAHRS/NGS
c.
Receives navigation information from
TACAN, VOR, or ILS (CDI input
selected on COMM/NAV control
Sg 3, fr 6
transfer panel)
D.
NAV TRNG panel
1.
Location: fwd cockpit, right console, aft
2.
Function: for training purposes, simulates
selected partial failure of aft cockpit
NAV TRNG PANEL
instruments (ADI, HSI, TACAN, VOR, or
(8-03) Original
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