DA 42 AFM Airplane Description
Doc. No. 7.01.05-E Rev. 8 15-Dec-2017 Page 7 - 47
Fuel Temperature
A fuel temperature sensor measures the fuel temperature in each main tank. The indication
is provided by the G1000 flight display. Information about fuel temperature limitations
can be found in Chapter 2 - OPERATING LIMITATIONS.
The lower yellow bar indicates that the airplane is not ready for take-off if Diesel Fuel or
a blend of Diesel Fuel with Jet Fuel is used (approved only if MÄM 42-037 is incorporated).
If the fuel grade is uncertain, take-off is not allowed in this temperature range either.
In the temperature range below -5 °C (23 °F) the engine must not be started if Diesel Fuel
or a blend of Diesel Fuel with Jet Fuel is used. If the fuel blend is uncertain, the engine
must not be started in this temperature range either.
If the airplane is being operated with Jet Fuel, operation in the yellow temperature range
is permissible.
Fuel Grade
Approved fuel grades are listed in Section 2.14 - FUEL. As the fuel grade is important
concerning operating temperature limitations, the pilot must be sure about the fuel grade.
Cold Diesel Fuel tends to flocculate, which can lead to clogging of the fuel filter. The fuel
filter is not heated.
If the airplane is operated in a cold environment, it must be changed from Diesel Fuel
operation to Jet Fuel operation. To ensure that no blend of Jet Fuel with Diesel Fuel is
in one of the tanks, each tank must be refilled at least twice with more than 65 liter
(17.2 US gal) of Jet Fuel. Otherwise both tanks must be drained before refueling with
Jet Fuel.
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