CAUTION
Be sure that PLA caution message is not displayed before
selecting MANUAL mode.
NOTE
PLA caution message is active only when operating in AUTO mode.
The MANUAL mode condition is indicated to the pilot by the activation of
MAN legend on EDU 1.
ENGINE OPERATION IN MANUAL MODE
Following a reversion to MANUAL mode, voluntary or automatic (MAN
legend displayed on EDU 1), the FMM tracking system will fix the N1 speed
to the last commanded value (fail fix mode of operation) maintaining the
engine torque within ± 50 SHP.
The MANUAL mode control characteristic will vary depending on the engine
condition at the mode transfer.
One engine in MANUAL mode and one in AUTO mode
It is recommended to set the ″MANUAL″ engine to a suitable fixed power
related to the particular flight condition and let the other engine ECU maintain
rotor speed. Monitor engine parameters to respect the limitations.
Any change of fuel flow and consequently of N1 speed may be accomplished
through power lever movements.
Each power lever is motorized and it should be operated by the pilot through
the relative ENG TRIM toggle switch placed on collective control.
Land as soon as practical.
RFM A109E
3-30 R.A.I. Approved
Rev. 11
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