Noise Abatement - AUTO GYRO Rotax 916 IS Pilot Operating Handbook

4.23 Noise Abatement

A positive attitude towards residents and environmental-friendly flying supports the reputation
and acceptance of aviation in general, and gyroplanes in particular. When compared to other
airplanes the noise of a gyroplane is sometimes perceived as unpleasant although it meets
the same or sometimes more stringent noise emission requirements. This effect can be
attributed to the pusher concept where the propeller is exposed to air flow which was distorted
by the fuselage. The degree of distortion, and therefore the noise emission of the propeller,
is significantly lower at reduced speeds. The best practices to keep noise level low and
general acceptance high are:
 Climb with the speed for best rate of climb V
 Especially in climb keep side slip to a minimum to establish a clean configuration. In
addition, this guarantees the best climb performance
 For your own safety always maintain safe altitude and avoid unnecessary 'low-flying'
 When overflying populated areas, look ahead and select the least noise sensitive
route
 Repetitive noise is far more irritating than a single occurrence. If you must fly over the
same area more than once, vary your flight path
 Avoid blade slap (wop-wop noise). Blade slap can occur as a result of inadequate
piloting technique or during aggressive manoeuvres, but will not appear in normal
flight regime
Above procedures do not apply where they would conflict with Air Traffic
Control, within the traffic pattern, or when, according to pilot's judgement, they
AutoGyro_POH_MTOsport-Model2017
915/916iS
Pilot Operating Handbook
MTOsport Model 2017
915iS & 916iS
NOTE
would result in an unsafe flight path.
Revision 2.0 – Issue Date 01.APR.2024
NORMAL PROCEDURES
as soon as altitude permits
Y
SECTION 4
4-18