AutoGyro Cavalon - Page 53

Pilot Operating Handbook
Cavalon
SECTION 3
EMERGENCY PROCEDURES
AutoGyro_POH_Cavalon 915iS Revision 1.0 – Issue Date 08.MAY.2019 3-8
Abnormal indication
Probable failure mode
Gauge suddenly goes to full scale
deflection, other gauges reading normally
Gauge faulty
Oil temp suddenly falls to zero, other
gauges reading normal
Gauge faulty. Cross refer to oil pressure
gauge, if there is pressure there is likely to
be temperature
Oil temp rises above maximum, other
gauges normal
Very low oil level, blocked radiator or
thermostat. Stop engine, make
precautionary landing
Oil pressure falls to zero, possible loss of
pressure.
Warning LED will also light. If lit, Stop
engine, make precautionary landing. If not,
monitor, and prepare for possible
stoppage.
Coolant temp gradually or suddenly rises
above max temp
Check coolant warning LED. If not lit then
probable gauge failure. If lit, possible loss
of coolant. Stop engine, make
precautionary landing
Fuel level gauge suddenly falls to zero or
FSD
Probable gauge failure, but always cross
check to predicted fuel burn. Low fuel light
will light as a backup.
Sudden, large deflections are normally unlikely, with the exception of loss of pressure
readings.
Canbus note
The engine parameters (Coolant temp, coolant led, oil temp, oil pressure and engine rpm)
are provided via the Canbus system to the gauges, via a digital to analogue Convertor. On
start up the gauges initially go to full scale deflection, the normal Road gauge
manufacturers process.
The Convertor then self-checks by displaying the red line indication, dropping to the green
line indication.
The Convertor compares the information provided by the two Canbus inputs.
If one input fails the unit will display the information from the other Canbus.
If both fail the indication is zero, but the gauge internal warning light illuminates.
If the information provided shows a significant discrepancy the gauge will go to FSD and the
internal warning lamp will illuminate.
In the event of both Canbus input failure, or Convertor failure, no information will be
displayed on the gauges.
In this situation, and provided the Lane A or B lamps are unlit, the engine will run normally.
Land at the earliest safe convenience for system rectification.