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Pilot’s Operating Handbook DFE Ultralights Ascender III-C
SECTION IV
FLIGHT PERFORMANCE
GENERAL
This data is to inform the pilot what they can expect from the aircraft in the way of performance
and to assist in preflight planning.
Fight performance data is included for the Ascender III-C model equipped with the Rotax 503
DCDI engine and dual carburetors. The data has been compiled from actual flight-testing using
average piloting techniques, with an aircraft and engine in good operating condition. All
information is corrected for standard atmospheric conditions.
AIRSPEED CORRECTION
The Hall, tube-type airspeed indicator, when installed at the end of the canard elevator push rod,
is accurate in all flight attitudes and speeds. There is no position error in this installation. CAS
and IAS are equal.
STALL SPEED / MINIMUM FLYING SPEED
The DFE Ascender main wing does not usually stall in 1 “g” flight when flown dual as the
canard elevator stalls first. The minimum controllable airspeed is 32 MPH IAS.
TAKEOFF PERFORMANCE
Density Altitude Distance
1000 feet
240 feet
CLIMB
PERFORMANCE
Density Altitude
Rate of Climb
1000 feet
1000 fpm