Supplement POH DR400/120D, DR400/140B,
DR400/180R, DR400/200R, DR400/RP
Page 3 - 8 Issue 3 – July 2014
c) Abnormal engine behavior
Note: The FADEC system normally switches
automatically between FADEC A and B in case of
malfunction, in order to select the "healthiest"
component.
If this automatic switching doesn't work, it is possible to
manually force the system to switch to FADEC B only,
and check for improvement in engine behavior.
1) Maximum airspeed ........................................ (100 KIAS) 185 km/h
2) "FADEC A/B" switch........................................................FORCE B
3) If no engine operation improvement ......... Return switch to "Auto"
Note: The switching from one FADEC to the other
one is usually accompanied by a short RPM fluctuation.
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