Pilot Operating Handbook
Cavalon
SECTION 6
WEIGHT AND BALANCE
AutoGyro_POH_Cavalon 915iS Revision 1.0 – Issue Date 08.MAY.2019 5-8
5.10 Sound Exposure Level / Noise Characteristics
The noise certificate was granted according to the German requirements for noise
protection for microlight gyroplanes (“Lärmschutzverordnung für Ultraleichte
Tragschrauber”) stating an overfly noise of 64 dB or less.
5.11 High Altitude Operation
The reducing air density climbing to this altitude means that the engine will be prone to over
revving. Throttle back, or increase propeller pitch (where a variable pitch propeller is fitted).
Rotor rpm will rise by approximately 90rpm. This will increase disc inertia, and may effect
the rotor vibration. The rpm will easily rise above this value at Vne or in turns. Ensure the
rpm remains within gauge limits.
Engine oil or coolant systems may be compromised by the lack of air density to remove the
heat. Ensure T’s and P’s remain within limits.
Ensure the aircraft remains within the handbook operating temperature limits; ISA standard
is approx. -13degC, the aircraft is approved to -20degC.
Ensure occupants are properly equipped for operation at this altitude – especially for the
low temperature, and for the lack of oxygen.
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