AIRCRAFT FLIGHT
MANUAL
BRISTELL B23
Document No.: ADXC-73-001-AFM
Non-approved page
Revision: A2
7-32
Date of Issue: 15.04.2021
7.11.4 External Power
The functionality of the external power is limited to supply the engine
starter motor and the indication light. The external power cannot be used
for re-charging.
The external power plug is located on the lower side of the firewall on the
engine side left of the nose landing gear. It is accessible through the
large air-dump opening of the lower cowling.
WARNING
The external power connection and disconnection is only possible with
the outside person temporarily out of sight from pilot station. If an outside
person is used a clear coordination before the operation between the
pilot and the outside help is mandatory. The outside person is advised to
always keep one hand on the left wing leading edge as visible sign to the
pilot of a save position. Under no circumstances the outside person shall
move other than along the leading edge when engine is running.
Removal of the external power connection with engine running is not
advised.
The voltage supplied to the external power must be in the range of 12 to
14Volt for correct operation. Incorrect polarity of the external power
supply is protected by a control diode.
The continuous current capacity of the external power plug is 50Amps
which is usually exceeded during engine start attempts. Therefore, even
with unlimited electric supply the time of start attempts must be limited.
CAUTION
The starter should be activated for a maximum of 10 sec., followed by 2
min. pause for starter, starter circuit and external power connection
cooling.