The OEI mode is a subset of CRUISE mode and is automatically selected if
one engine becomes inoperative.
The OEI format is presented also in REVERSIONARY mode.
The AUTOROTATION mode is automatically selected when both engines fail or
run at idle, both engine torque inputs are at zero or in presence of NR/N2 split.
The AUTOROTATION format is presented also in REVERSIONARY mode.
Fig. 1-9. EDU 1 - OEI Mode
Fig. 1-10. EDU 1 - AUTOROTATION Mode
RFM A109E
R.A.I. Approved 1-21
Rev. 2
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