Revision: 4
Date:
09/08/20
RV-12iS Flight Training Supplement
6-6
VOLTAGE REGULATOR NORMAL OPERATION:
The Rotax 912 ULS voltage regulator generates more heat as electrical load is increased. The voltage regulator has
internal safety features to prevent damage. For further information read the section on the Rotax 912 ULS voltage
regulator in the Emergency Procedure Section of the POH.
The Rotax 912 iS is equipped with two voltage regulators, one for each generator on the engine. These regulators reject
any unused electrical power as heat. Allowing the power usage to fall below 7 amps for extended periods of time may
damage the regulators, especially on hot days. For this reason, it is recommended to turn on the Avionics Switch,
NAV/STROBE Switch and Landing Light Switch once the engine is running. Voltage regulator B provides power to the
main bus and is located on top of the fuse box. This regulator is the most susceptible to overheating. The NACA cooling
duct in the upper cowl provides cooling air for regulator B for both ground and flight operations.
FLAP SWITCH: Deployment of the flaperons is controlled using a flap switch.
Pulling the flap switch aft, toward the pilot deploys the flaps. Pushing the flap switch forward retracts the flaps. The flap
switch is latching
for the “up” switch position. Simply press the flap switch forward and the flaps will continue to retract,
freeing your hand for other critical tasks (especially during a go-around). Remember to re-center the flap switch out of
the latched position after the flaps have retracted and pilot workload is reduced. The flap position is indicated on the
EFIS screen. The flaps have been designed to provide sufficient roll authority when deployed. The flap feature will
generally be used for landing and/or take-off but can be used anytime that the indicated airspeed is below 82 kts.
WARNING
Do not use flaps at an indicated airspeed greater than 82 kts.
FUSES
The fuse panel is located directly on the center console. Replacement fuses are stowed in a special holder underneath
the instrument panel on the pilot side of the aircraft. The fuse holder is retained using a hook-and-loop tape fastener.
FLAPS UP
FLAPS HALF
FLAPS DOWN
FLAPERON
Summary of Contents for RV 12iS
Page 1: ...Revision 4 Date 09 08 20 RV 12iS Flight Training Supplement i FLIGHT TRAINING SUPPLEMENT...
Page 14: ...Revision 4 Date 09 08 20 RV 12iS Flight Training Supplement 4 2...
Page 15: ...Revision 4 Date 09 08 20 RV 12iS Flight Training Supplement 4 3...
Page 50: ...Revision 4 Date 09 08 20 RV 12iS Flight Training Supplement 6 2 ELECTRICAL SWITCHES KNOBS...
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Page 89: ...Revision 4 Date 09 08 20 RV 12iS Flight Training Supplement REAR COVER...