Pipistrel Virus SW 121, Pilot Operating Handbook

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3-22
PAGE
Virus SW 121
Pilot Operating Handbook
POH-121-00-40-001
PAGE REV. 0
SECTION 3
EMERGENCY PROCEDURES
APPROVED
NOTE: Referring to the GPS for flying, adjust indicated airspeed during climb
or approach. Use +10 KTS on top of standard procedure as guidance and
observe the wind situation.
Pitot Tube Blocked
If only the airspeed indicator is providing erroneous information, and in icing
conditions, the most probable cause is pitot ice. Descend into warmer air. If
an approach must be made with a blocked pitot tube, use known pitch and
power settings and the GPS groundspeed indicator, taking surface winds
into account.
1 Groundspeed indicator
+10 KTS for procedures, observe
winds
3.14 ELECTRIC TRIM / AUTOPILOT FAILURE
Any failure or malfunction of the electric trim or autopilot can be overridden
by use of the control stick. If runaway trim and/or autopilot servo is the prob-
lem, cut the circuit by pulling the circuit breaker (AP SERVO or AP PNL or EL.
TRIM) and land as soon as conditions permit.
1 Airplane Control
GRASP STICK,
MAINTAIN MANUALLY
2 Autopilot (if engaged) DISENGAGE
If problem is not corrected:
3 Circuit Breakers
PULL AS REQUIRED
AP SERVO / AP PNL / EL. TRIM
4 Throttle Lever AS REQUIRED
5 Control Stick MANUALLY HOLD PRESSURE
6 Land as soon as practical.
3.15 BATTERY OVERVOLTAGE / MALFUNCTION
If the Aliant battery is installed and overvoltage occurs (over 14.8 V), the
battery must be disconnected from the system to prevent adverse effects.
The EarthX battery disconnects itself in case of over- or undervoltage. The
battery must be disconnected if its battery caution light starts flashing.
1 Battery disconnect switch PULL