Pipistrel Virus SW 121, Pilot Operating Handbook

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3-20
PAGE
Virus SW 121
Pilot Operating Handbook
POH-121-00-40-001
PAGE REV. 0
SECTION 3
EMERGENCY PROCEDURES
APPROVED
PFD - Loss of Air Data
In the event the PFD detects a loss of air data (dual ADAHRS failure), or data
is unreliable, the affected indicator is removed from the display and replaced
with a red “X”. If loss of air data occurs, refer to the mechanical instruments
(altitude, airspeed).
PFD - Loss of Attitude Data
In the event the PFD detects a loss of attitude data (dual ADAHRS failure),
or data is unreliable, the affected indicator is removed from the display and
replaced with a red “X”.
For a more complete description of the PFD and MFD functions, refer to
Section 7.
WARNING: !
When subjected to a power loss of less than 20 seconds, the
PFD is capable of performing a warm start. In this event, a “PLEASE STAND-
BY” message will be displayed for 2 seconds followed by a “ATTEMPTING
QUICK RESTART” message. In the event of a power loss greater than 20
seconds, a warm start is unlikely, and the power interruption will result in loss
of attitude information until the PFD can be restarted on the ground.
3.10 GENERATOR FAILURE
Steady illumination of the “GENERATOR FAIL” caution light indicates a failure
of the generator. The most likely the cause of the generator failure is a wiring
fault, a malfunctioning generator, or a malfunctioning voltage regulator. Usu-
ally, electrical power malfunctions are accompanied by an excessive rate of
charge or a discharge rate shown on the ammeter. In this condition on board
battery should provide power for at least 30 minutes.
If generator failure persists:
1 Switch off unnecessary equipment to reduce loads. Monitor voltage.
2 Land as soon as practical.
CAUTION:
The generator in this airplane is self-exciting. This generator
requires battery power for generator starting; however, once started, the
generator will provide self-generated field power to continue operation in