pc12.oh

The Overhead panel on the PC12 houses the switches, toggles and buttons for controlling the electrical system consisting of but not limited to the items listed below. For the PC12, the overhead panel is very basic and simple to use. Gen1, Gen2, Bat and Avionic 1 is the only part of the system operational. See below for the startup sequence to use.

- 1 GEN1 Starter/Generator Unit 28 VDC, 300 amps
- 1 GEN2 Back-up Alternator Unit 28 VDC, 130 amps
- 1 Nickel-Cadmium Battery 24 VDC, 40 Amp hours
- 1 Avionics Master Bus

On the PC12 aircraft, when using this panel the following sequence should be used when starting the Pratt & Whitney PT6A-67B Turboprop.

Pre start checks:
1) Avionics OFF Check/SET
2) Gen1 and Gen2 OFF Check/SET
3) "Feathering Lever to "Fuel cutoff" (pull!) Check/SET
4) Throttle IDLE Check/SET
Cold Start Sequence:
a) Battery ON
b) Engine Ignition ON
c) Start button PUSH
d) At ITT of 14% (or NG of 10) Set Condition Lever to Ground Idle
(the engine is STARTED!)
e) Gen 1 ON
f) Gen 2 ON
g) Avionics ON
Ready to Taxi!