Pilot Operating Handbook
Cavalon
SECTION 3
EMERGENCY PROCEDURES
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
3-5
NOTE
In case of a control cable breakage the carburettor will be automatically set to
full throttle position.
Throttle jammed closed
Land as per Emergency Procedure “Engine failure”. Residual power may be used to extend
the glide.
3.8.2
Rudder Malfunction
In case of a stuck or loose rudder, continue flight to a suitable, preferably wide landing site
that allows a landing into the wind. If necessary reduce power to avoid excessive side slip.
Align gyroplane prior to touch-down, using engine torque or lateral control input to the side
where the nose is pointed.
3.8.3
Rotor Head Control
In case of a rotor head control malfunction, control pitch attitude using careful trim input and
power setting. Use rudder for directional control and for shallow turns. In some conditions it
may be appropriate to reduce power/speed in order to avoid phugoid effects or a possible
negative yaw-roll coupling. Approach landing site with wide and shallow turns.
3.8.4
Trim runaway
Failure of a trim selector switch or pneumatic valve may result in trim runaway (where the
trim system runs to one extreme and pushes the control stick accordingly). Although the
average pilot is able to resist the out-of-trim stick force and continue to fly the aircraft it may
be possible to reduce the stick load by intervention:
(i)
High forward stick load required to prevent aircraft nose rising (this will be
coincident with a high air-pressure reading) – briefly turn the Flight/Brake selector
to “Brake” to deplete system air pressure. If the air compressor is heard to start
and the pressure rises again then pull the circuit-breaker marked “Comp” to stop
the compressor. Repeat the brief selection of “Brake” to deplete system air
pressure as required.
(ii)
High aft stick load required to prevent aircraft diving (this will be coincident with
low or zero air pressure) – check “Comp” circuit breaker, if activated push to reset
then try to trim aircraft nose-up. If unsuccessful then continue to expedited
landing. Note: reset the circuit-breaker once only.
(iii)
High roll-left or roll-right stick load required to maintain balanced flight (coincident
with high air-pressure reading). Pull the “Comp” circuit breaker to prevent further
increase in air pressure and attempt to re-trim. If unsuccessful then continue to
expedited landing. Do not select “Brake” in an attempt to reduce air pressure as
this will disturb the pitch trim (in which the out-of-trim forces are significantly
higher)
