Pilot Operating Handbook
Cavalon
SECTION 4
NORMAL PROCEDURES
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
4-11
WARNING
If the rotor speed has decayed to below the green arc, then ground speed must
be built-up very carefully to increase rotor speed. Take care! Slow rotors can
stall and flap, causing expensive aircraft damage! If in doubt, abort the take-off
run and restart.
CAUTION
Do not engage pre-rotator at high engine RPM or drive the rotor to excessive
RPM as this will lead to pre-rotator drive damage.
CAUTION
Avoid overtorqing of the pre-rotator drive! Overtorqing will occur if RPM/power
is fed excessively or abruptly. In case of a stalling engine, release pre-rotator
button temporarily. Do not yank the throttle control while the clutch is engaged!
CAUTION
Do not try to pull the stick back with the pre rotator engaged and under load.
The drive torque will prevent the system sliding joints from moving, resulting in
damage to the drive system.
NOTE
Perform take-off into the wind and with least possible crosswind component.
NOTE
To avoid unintended engagement in flight the pre-rotator can only be activated
with the control stick in its forward position.
WARNING
In the event of pre-rotator failure, STOP and rectify the fault. Do NOT attempt to
pre-spin by hand, as this involves considerable personal risk if the engine is
running.