JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 5
–3
5.2.2
Motor fails to deliver power
Propulsion system failure may occur due to the batteries being depleted
or due to an electrical failure that may have occurred.
If the propeller remains in the vertically aligned position, it means the
HV power is still available. Retract the pylon and continue the flight as
a pure glider.
If the propeller windmills it is an indication that HV power to the motor is
interrupted. The pilot may attempt to restore power as described in the
next section.
5.2.3
Power loss during flight
If the 12 V supply power or HV battery power is lost during flight, the
propeller will windmill. The following action can be attempted to restore
power:
1. Change the 12 V system power to the alternate battery
2. Switch the guarded RES master switch OFF and back ON
3. If the HV power is restored after being powered up, the
automatic propeller brake will be activated. Normal operation
can then be attempted
4. If HV power is not restored and the propeller continues to
windmill, land as soon as possible
CAUTION:
Drag
increases
significantly
with the propeller
windmilling.
WARNING:
Do not retract the pylon while the propeller is
windmilling.
