Robin DR400/120D - If the ALT Light Is Lit or the Ammeter Shows Battery Discharge During Normal Engine Operation for more than 5 Minutes

Supplement POH DR400/120D, DR400/140B,
DR400/180R, DR400/200R, DR400/RP
Page 3 - 18 Issue 3 – July 2014
If the “ALT“ light is lit or the ammeter shows battery discharge
during normal engine operation for more than 5 minutes
1) Alternator circuit breaker .................................................. Check ON
 CAUTION: If the FADEC was supplied by battery only
until this point, the RPM can momentarily drop, when the
alternator will be switched on. In any case: leave the
alternator switched ON!
2) Check "ALT" light and voltmeter indications
3) If normal operation has not resumed:
Alternator ................................................................................... OFF
4) Switch OFF all electrical equipment not essential for continuation of
flight
5) Land as soon as possible