Flight Manual STEMME S6
Doc.-No.:P400-006.000 E Page: 3-29 Revision: ---
Date of Issue: 07. October 2008 Agency approved Date of Rev.: --.--.----
3.12.1.8 Total Electrical Failure
A total electrical failure can have several reasons. In any case, the COM and all
electrical equipment are not available, including:
- elevator-trim,
- propeller pitch control
- engine-instrumentation, incl. Turbocharger-Control-Unit (TCU)
(except manifold-air-pressure-gauge). Also the electrical auxiliary-fuel-pump and
the TCU will fail. The manifold-air-pressure has to be controlled by hand within
the allowed limits. The RPM should be as low as possible to do not exceed the
maximum RPM. The following procedure is recommended:
1. Master-switch
OFF (not the engine-ignition-
OFF (Generator, Avionics)
3. All system circuit-breakers CHECK
do not push in popped-out
4. Master-circuit-breaker CHECK (PULL and then
When the electrical-system is available again (the voltmeter shows normal
voltage), try to switch ON individual systems. If possible avoid to switch ON
systems with circuit-breakes that popped-out.
If it is not possible to repair the electrical-
procedure is recommended:
1. Throttle REDUCE for level-flight to
approx. v
y
= 62 kts / 115 km/h
Prepare for a safety-landing on the next suitable airfield.
Warning: The tachometer is not working. The engine-RPM can only be
controlled by hearing. Do not overspeed the engine.
Therefore (and because the TCU may fail), the
recommended power-setting is for level-flight with approx.
v
y
= 62kts / 115 km/h.
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