T-45A UJPT, E2-C2, ADV, & IUT Eng-19
Flight Instruments
(2) Generates pitch, roll, and stabilized
heading signals for SAHRS
(3) Takes 120 seconds after power
applied to erect, align, and produce
valid signal
c.
Controls/switches/indicators: none in
cockpits
d.
Subsystem interfaces: provides
information to HSIs, ADIs, and HUD
(1) Power
(a) 115 VAC essential bus
(b) 28 VDC essential services bus
NOTE: The SSA is
operational upon loss of the
(2) Also exchanges information with
yaw damper, VOR/ILS, and
airborne data recorder (ADR)
(a) Strapdown laser gyros and
accelerometer provide aircraft
attitude information
(b) Remote compass transmitter
used to accurately determine
aircraft heading
3.
Remote compass transmitter/induction
compass transmitter
a.
Location: vertical stabilizer
b.
Function: senses direction of earth's
magnetic field and sends signal to
SAHRS/NGS
(8-03) Original
Page 19-9
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