Supplement POH DR400/120D, DR400/140B,
DR400/180R, DR400/200R, DR400/RP
Issue 3 – July 2014 Page 3 - 17
ELECTRICAL POWER SUPPLY MALFUNCTION
Note: The TAE 125 requires an electrical power source for its
operation. If the alternator fails, the only power source
will be provided by the battery. The time the engine can
run on battery alone will depend on total electrical
consumption supported by the battery, i.e. the load of the
electrical equipment kept in use.
The pilot should turn off all non-essential items and
supply power only to equipment which is absolutely
necessary for continued flight depending upon the
situation.
If the FADEC back-up battery is installed (TAE 125-02-99 installation):
▲ WARNING: When both main battery and alternator have failed, the
engine will continue to operate using the FADEC backup
battery for limited time. In this case, all electrical
equipment will not operate:
- land immediately
- do not switch the “FORCE-B” switch, this will shut down
the engine!
The failure of the alternator is indicated by:
"ALT" light is ON
Voltmeter shows too low or too high voltage (red range)
Ammeter (if installed) shows battery discharge for more than
5 min
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