Pilot Operating Handbook
Cavalon
SECTION 3
EMERGENCY PROCEDURES
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
3-9
3.12 Door open in flight.
A door open in flight is NOT catastrophic. The door hinge line is angled to the oncoming
airflow such that if left open before take-off, or opened in flight, the oncoming airflow will
naturally close the door.
Note, yawing the aircraft such that the open door is downwind will allow the door to open
more, but on straightening out the oncoming airflow closes the door. If the yaw is such that
the open door is upwind, then the oncoming airflow keeps the door firmly shut.
In the event of this occurrence, fly the aircraft and ignore the open door until it is safe to
close it. This will be either on the ground, by a passenger (if it is on their side) or by slowing
and trimming the aircraft at a safe speed that allows the pilot to release hand(s) for the
closure task.
3.13 Warning and Caution Lights
3.13.1 GEN 3 (orange) or Low Volt (orange) Indicator Light
The (optional) GEN3 lamp, when lit, indicates that there is no voltage being supplied from
the aux generator/regulator circuit. There are no warning lamps for GEN 1 and GEN 2
.
GEN1 supplies the engine EMS system only.
GEN2 supplies the aircraft on board systems, and is a backup to GEN1
GEN3 is an aux generator, supplemental to GEN2 for aux equipment
All lamps are normally lit when the engine is stationary or at very low rpm.
These lamps are normally not lit in flight, but may be seen to pulse gently in low light
conditions.
If during normal operation GEN1 fails, the ECU automatically switches over to supply the
EMS by using GEN2. The LANE lamps will start flashing, advising the pilot of the failure. If
the engine is supplied by GEN2 the engine is able to deliver full performance. There is
performance drop while the engine switches the supply from GEN1 to GEN2.
However, this transfer will mean that the aircraft systems will then only be supported by the
battery.
If GEN2 supply fails, there is no direct indication. However, because the aircraft is
operating on battery power alone, the ‘LOW VOLT’ indication will almost immediately light,
warning the pilot of the fault and that system voltage has dropped below 11.8v.
If both GEN1 and GEN2 fail, then the engine will stop unless powered from an external
source.
Required Action
If the LOW VOLT lamp is lit, then the aircraft voltage demand has exceeded supply, and
demand must be reduced in order for the lamp to extinguish. NOTE! When lit, this lamp also
indicates that the heated seats, heater fan and 12v socket have been turned off
automatically, with automatic reconnection when the supply exceeds demand.
Turn off all unnecessary electrical consumers, and expect the aircraft systems to last a
maximum of 30mins before running out of electrical energy.
