Flight Manual STEMME S6
Doc.-No.:P400-006.000 E Page: 3-28 Revision: ---
Date of Issue: 07. October 2008 Agency approved Date of Rev.: --.--.----
3.12.1.6 Red External-Alternator-Warning-Light is ON
If the red external-alternator-warning-light is ON, this shows that the alternator
(with engine-master-switch ON) is not generating electrical power. This is
normal if the engine is not running.
If the external-alternator-warning-light is ON when the engine is running, this
could be a malfunction. The following procedure is recommended:
1. Voltmeter/Amperemeter
CHECK; whether there is an
2. Circuit-breaker for the external-
CHECK (if necessary push in)
If there is an alternator malfunction:
External-alternator-switch
Electrical-equipment not needed
Prepare to land on the next suitable airfield.
In the case of a failed alternator, the battery will be discharged constantly. To
save energy, switch OFF all electrical-equipment that is not needed.
3.12.1.7 Yellow Internal-Generator-Caution-Light is ON
If the engine is running, the yellow internal-generator-caution-light ON shows a
malfunction of the internal-generator. This is not a critical situation. The internal-
generator-bus is supplied with energy from the main-bus (battery and external-
generator). The following procedure is recommended:
1.
Continue flight with special attention to the red external-generator-
Warning: If the yellow internal-generator-caution-light is ON and also
the red external-generator-warning-light is ON (see section
3.12.1.6), the TCU and the fuel-pumps are supplied only by
the battery. The battery will not be re-charged. If the battery
is dis-charged the engine can fail. Prepare to land on the
next suitable airfield. If the battery is well charged, it has
energy for 20 – 30 minutes of flight-time.
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