EuroFOX - Pilot Operating Handbook and Flight Training Supplement
May 1. 2019
4-29
4. Performance
The data is based on particular flight measurements undertaken with the
aircraft of this type in good service conditions and with application of
average piloting technique. The performance values stated below are
calculated at sea level of the international standard atmosphere (ISA).
Variations in pilot technique can cause significant differences as well as
other conditions like runway slope, runway surface condition, humidity etc.
Use the following data for guidance but do not plan a takeoff or landing
when only 50 ft excess runway is available or do not plan a cross country
with only 2 gallons fuel planned when arriving to your destination. Always
be conservative when planning a flight and be ready for the unexpected
–
not forecasted wind, atmospheric turbulence or sudden weather change in
destination forcing you to divert to airfield 60 NM away. Always plan a
reasonable fuel reserve
– 30 to 60 minutes seems to be sufficient time for
most of flights, but this time should be even more increased when
complicated weather conditions (strong headwind or rain showers) are
expected en route.
The propeller installed on your aircraft was set to achieve the best
compromise between takeoff and cruising performance (the performance
information below is based on this setting). You can change the setting
(see propeller documentation) to achieve a better rate of climb or a better
cruising speed. Always be careful when making this change and make a
record of the current settings. When the propeller is set to achieve a
maximum cruise speed, the takeoff distance is significantly longer. On the
other hand, when the propeller is set to achieve good rate of climb, the fuel
consumption during a level flight is higher. The finer pitch is being set (e.g.
climb setting), the higher static RPM are achieved when aircraft is static
and full power is applied.
