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Fuel system
description:
fuel selector valves:
gascolator:
fuel capacity:
unusable fuel (per reservoir):
fuel filter:
All fuel hoses are protected with certified glass-teflon cover. Sinus ultralight motorglider models 503
and 582's fuel system are without fuel return circuit. Model 912's fuel system features fuel return cir-
cuit.
WARNING!
Visual fuel quantity indicator (tubes) in cockpit do not always provide relevant
information about the actual fuel quantity on board. Due to reasons of wing dihedral, angle of
attack, sideslip and reservoir supply point the readout may be incorrect. Flying with less than 3
cm (1 Inch) of indicated fuel (measured from the bottom of the tube upwards in any of the reser-
voirs) is therefore regarded as hazardous any may result in engine fuel starvation and/or engine
failure.
CAUTION!
Due to the position of the fuel reservoir supply point, flying in considerable sideslip
for a longer time may result in fuel starvation to the engine if the fuel tank in the opposite direc-
tion of the sideslip is closed. Should this occur, righten the flight and re-open the fuel tank in
question immediately to prevent engine failure.
Schematic of fuel system - models 503 and 582
Schematic of fuel system - model 912 (no fuel return circuit)
vented wing fuel tanks with refuling aperture on top of the wings
30 + 30 liters (std.) / 50 + 50 litres (optional)
SINUS motorglider
Aircraft and systems on board
separated, one for each fuel tank
filter equipped with drain valve
2 liters (std.) / 5 litres (optional)
metal, inside the gascolator
63
REV. 0
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