92 – Propeller Self-Test
Each ECU senses the power lever position separately. So, if the power lever sensors are not
properly aligned, one ECU might release the self-test with power lever position <5% while
the other ECU might not release the self-test because it senses a position >5%.
There is a hysteresis in the detection of propeller idle speed. If the propeller speed increases
beyond 1150 rpm, it has to be decreased below 1100 rpm again before the release criteria
of bits 6 and 7 can be fulfilled again.
Engine oil temperature above 50 °C
Power lever to idle, propeller speed to idle
Self-test starts
State 2: Propeller speed increases beyond 1850 rpm
State 3: Propeller speed decreases by at least 70 rpm
State 4: Propeller speed increases again beyond 1820 rpm.
Switching from ECU-A to ECU-B, perform test on ECU-B
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