AFMS N° D08 FOR ALTERNATIVE AVIONICS CONFIGRATION AND
VARIABLE PITCH PROPELLER EQUIPPED AIRPLANES
Page GV 7-23
9.3 EXTERNAL POWER SUPPLY
On the right side of the tail cone, an external power is present. Using this device
it is possible to feed the electric system directly on the main bus bar, by an ex-
ternal power source. It should be used at the engine start-up in cold weather con-
dition.
A white advisory “EXT. POWER” label will appear on annunciator panel upon
connection of external power in order to advise pilot; the label will disappear
upon disconnection of ground external power.
CAUTION
Exercise caution while applying external power.
Exercise extreme caution while disconnecting external power with en-
gine running due to airflow coming from the propeller.
Approach the power supply receptacle from rear of the wing.
Make a positive check, upon disconnection, that:
- the power chord is free from any aircraft structure
- the receptacle is firmly closed.
Follow this procedure to start the engine using the external power source.
1. Ignition key, Master switch, Generator switch: OFF
2. Open the receptacle door and insert the external power source’s plug into the
socket
3. Engine start-up procedure (see Sect. 4 in this manual)
4. Disconnect the external power source’s plug and close firmly the receptacle
door.
Section 7 – Airframe and Systems description
ELECTRICAL SYSTEM
Ed. 1, Rev. 0
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