DFE Ultralights Ascender III-C 2001, Pilot Operating Handbook, Page: 8 / 44

8
Pilot’s Operating Handbook DFE Ultralights Ascender III-C
Flight in Instrument Meteorological Conditions (IMC) is prohibited.
Flight at night is prohibited.
Flight into known icing conditions is prohibited.
POWERPLANT LIMITATIONS
Engine Type Rotax 503 DCDI two-stroke aircraft engine equipped with dual
carburetors and 2.58:1 “B” type gearbox, 50 hp (37 kW) at 6500 rpm
Fuel
Minimum AKI 87 Mogas or 100LL aviation fuel
Tachometer
Maximum (red line) (rpm) 6800 for 5 minutes
Maximum continuous (rpm) 6500
Cylinder Head Temperature
Normal
Range (green arc) 350 – 430
0
F
Maximum (red line) 480
0
F
Maximum difference allowed between cylinders 34 F
0
Exhaust Gas Temperatures
Normal Range (green arc) (
0
F) 860 – 1000
0
F
Maximum (red line) (
0
F) 1200
0
F
Maximum difference allowed between cylinders (
0
F) 43 F
0
Fuel Pressure
Maximum 6 psi
Minimum 3 psi
Engine start and operating outside air temperature
Maximum +50
0
C
Minimum -25
0
C
W
W
W
A
A
A
R
R
R
N
N
N
I
I
I
N
N
N
G
G
G
Never fly aircraft equipped with this engine at locations,
airspeeds, altitudes, or other circumstances from which a successful