Airplane Factory SLING 4
Pilot Operating Handbook
Page | 7-40
DC-POH-001-X-C-3
Revision : 1.3
Fuel type and considerations regarding the operational use of the fuel system
Refer to the latest revision of the Rotax 914 UL engine and operator manuals
and the latest revision of Rotax service instruction SI-914-019.
Fuel system
FUEL (914 UL)
Minimum RON 95 / Minimum AKI 91
Grade
MOGAS
DIN EN 228 Super, DIN EN 228 Super Plus, ASTM
D4814.
AVGAS
Leaded
AVGAS 100LL ASTM D910.
Unleaded
UL91 ASTM D7547.
WARNING
The fuel lift pipe in each fuel tank is situated adjacent to the lower inside
wall of the tank. The aircraft should at no time be subjected to a sustained
side slip towards a near empty fuel tank (i.e. wing with near empty tank
down) as, despite the baffling, this may lead to fuel running towards the
outer edge of the tank and exposing the fuel lift pipe to suck air, thereby
starving the engine of fuel and leading to an engine failure. This poses a
particular threat when at low altitude, typically prior to landing.
WARNING
If a fuel lift pipe is exposed to air, the pump will suck air into the engine
(from the empty tank) and engine failure will result. When a tank is empty,
or close to empty, the fuel selector valve should be switched to the fullest
tank.
WARNING
At least one fuel pump must be operational at all times during flight for the
engine to be operational!
Summary of Contents for SLING 4
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