T-45A UJPT, E2-C2, ADV, & IUT Eng-19
Flight Instruments
a.
28 VDC essential services bus
(1) Pitot heat
(2) Standby AI
(3) SAHRS/NGS
(4) AOA system
(5) TACAN
(6) ADRS
(7) ADI (after AFC-246)
AFC-246)
b.
115 VAC essential bus
(1) H S I
(2) SAHRS/NGS
(3) ADI (after AFC-246)
(4) Emergency NLG door actuator
c.
26 VAC essential bus
(1) H S I
(2) TACAN
d.
(1) Radar altimeter
(2) ADI (prior to AFC-246)
(4) Barometric altimeter encoder
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(8-03) Original