Pilot Operating Handbook
Cavalon
SECTION 3
EMERGENCY PROCEDURES
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
3-10
If the ‘LOW VOLT’ lamp is ON, the engine has stopped, and there are no engine instrument
readings, then it is likely that BOTH generators have failed. Immediately activate the battery
backup switch (lift red cover and switch) this will provide electrical power to the engine and
aircraft systems from the battery.
Restart the engine if safe to do so (or make emergency landing). Turn off all unnecessary
electrical consumers. Land as soon as practical and rectify.
In GEN 2 failure case, the battery is expected, if in good condition, to provide 30 minutes* of
reserve power to supply the aircraft, instrumentation and avionics, after which time electrical
equipment may cease to function. Be prepared for an engine stoppage.
In the event of a dual (GEN 1 and GEN 2) generator failure, the battery, if in good condition,
is expected to provide a minimum of 25mins of normal aircraft operation.
*depends on capacity/ age of the battery
3.13.2 Low Volt
Battery voltage of the system has dropped below a safe value. Refer to chapter 3.13.1
above. Non-essential services and the 12V power receptacle will be disabled automatically.
3.13.3 Fire (red / if installed)
Refer to emergency procedure “Smoke and Fire” and Flight Manual Supplement.
The Fire Warning system works by constantly checking the resistance of a special cable
mounted in both the engine bay and in the battery and fuel pump bay. This cable contains
two wires where the insulation between the two wires melts beyond 180degC, creating a
short circuit. The cable has a resistor at the end of the cable to give a known standard
resistance of the detection loop.
This lamp will flash three times when the keyswitch is turned on. This indicates the system
has made a satisfactory self test. The lamp will then normally remain off.
The lamp will light a solid red when a fault has been detected (eg a short circuit to ground or
open circuit). A repair is required
.
The light will flash brightly if a closed circuit is detected. This indicates that the cable
temperature has exceeded 180degC, and therefore that a fire may be present. Action as
‘3.6, Smoke and Fire’
3.13.4 Low Fuel (red / if installed)
The LOW FUEL warning light is triggered as soon as 5 litres or less of useable fuel remain
in the tank. Perform a power-on landing at the nearest suitable location and be prepared for
engine failure after approximately 10 minutes remaining flight time.
3.13.5 Fuel P (amber/ if installed)
This indication serves to indicate low or high fuel pressure. Low fuel pressure is indicated by
a solid light, high fuel pressure by a flashing light.
Lamp will indicate on start up until fuel pressure reaches minimum required.
