I.C.P. Srl
Savannah™VG
FLIGHT MANUAL
Pag. 29
Issue 1/Revision 03
ICP Srl
– S.P.16 km 15,150 14022 Castelnuovo Don Bosco (AT)
Jan.2012
Tel. 011.9927503 Fax 011.9927266
It is recommended to check the take-off performance chart to determine if the flaps extension is
advantageous.
The above indicated data are based on an average aircraft. Actual values may vary base on
the aircraft’s weight and balance configuration.
4.7 CRUISE
The cruising speed is achieved at 75% engine power. Usually the propeller power (fixed pitch
propeller only) will decrease by 50% with only a 20% RPM decrease. So, at a constant aircraft’s
configuration, the propeller will use the full engine power (full RPM) while, at 4.600 RPM, the
propeller will be supplied with half the full engine power.
The cruise speed is 90 mph (5000rpm/27.2in.HG) with Rotax 912 UL and 95mph
(5000rpm/26 in.HG) with Rotax 912 ULS and 85 mph with Jabiru 2200; remember that the faster the
engine runs, the highest will be its fuel consumption and the lowest its operating life, while a slow
running engine, for the same power output, will have its mechanical components loaded by greater
forces and torques, thus increasing the risk to break rods, crankshaft and the other moving (rotating)
parts. Low RPM settings DON’T increase safety!
Low RPM settings produce low power output thus a lower airspeed would be achieved.
Increasing the flight altitude will decrease the engine power output as well as the propeller’s
thrust: to compensate for the lost of power, it is required to increase the engine’s RPM. The normal
engine running speed is 4,000 to 5,400 RPM for Rotax 912 and 912S and 2500 RPM for Jabiru 2200.
The engine has been designed to be safely and continuously operated at the maximum RPM
setting.
Air-box control: keep 20-24 °C of temperature. (Only Rotax 912 ULS)
4.8 DESCENT
To avoid shock cooling during the descent it is recommended not to operate the engine at
idle. This should decrease the chances for cylinder heads cracks.
Keep air-box control pulled for hot air.
4.9 APPROACH AND LANDING
Throttle
IDLE
Airspeed
60 mph / 97 km/h (IAS)
Flaps
20 °
Airspeed
45 mph (IAS)
Flaps
40°
Airspeed
40 mph / 64 km/h (IAS)
Brakes, upon touching down
APPLY
If a higher rate of descent is required, fully extend the flaps. The angle of the descent path
may be slightly varied by throttle operation as required to modify the gliding path. The flare will be
flown in a nose-up attitude. Upon touching down, releasing the control stick will lower the nose.
If downwind attitude, keep air-box control pushed for cold air. (Only Rotax 912 ULS)