Calidus
Variable Pitch Propeller - IVO
AutoGyro_POH_Calidus Revision 4.0 – Issue Date 17.JAN.2019 9-1 - 2
PRE-FLIGHT INSPECTION
Visual:
Check each of the propeller blades for damage, small nicks or delamination of the stainless-
steel edge protector, and security of attachment to hub.
Check the aluminium hub parts for cracks or damage and security of attachment to engine
Check the security of the spinner and presence of 9-off attachment screws
Check the fabricated bracket holding the brush carrier for security of attachment and
absence of cracks
Check the condition of the two carbon brushes (no pieces broken-off) and security of
attachment screws.
NORMAL OPERATION
Engine start
Before starting the engine turn on the master switch and using the rocker switch select the
full-FINE setting. (However, it is likely to be still fine from the previous inspection).
Run-up and power checks
For the engine run-up, the propeller pitch should be kept full-FINE.
Make sure the brakes are applied!
Take-off
For take-off, keep the propeller at full-FINE.
Monitor the engine RPM to ensure that the high RPM time limit specified by Rotax is not
exceeded.
It is the pilot’s responsibility to ensure that the recommended time limit is not exceeded.
Cruise
When the aircraft, in the climb phase, reaches the required cruising level, level-out and
adjust the throttle to the desired power level/manifold pressure. Then select the COARSE
pitch setting required.
Climb
To enter a climb while cruising in at any COARSE setting, the following sequence of actions
should be carried out:
1. Raise the nose to start the climb
2. As the airspeed reduces progressively open the throttle to the desired setting
3. If the climb rate is not sufficient (e.g. below 400fpm) select the full-FINE pitch setting
4. Before levelling-out or initiating descent consider the manifold pressure/engine RPM and
re-select COARSE when required
Caution: flying at low airspeeds with the propeller set fully coarse means that there may be
little ram-airflow through the propeller, increasing the chance of engine stall at low or idle
rpm. If the engine does stall set the propeller to full-FINE before re-starting.
Descent
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