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Engine #1 doesn't pitch lock


Zaaz
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Hi there

after changing propeller #1 we did reindexing but engine #1 doesn't go to over speed . RPM fixed at 100% with Fuel flow  2400. So the pitch lock can't  intervene . 

As operation effected.

_change the synchrophaser.

_change the valve housing.

_Change the propeller assembly.

_ change the engine #1 .

_ Continuity and insulation measurements between valve housing and syn .

But still the same problem. (Engine #1 doesn't pitch lock)

Any solution please.

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If RPM is staying at 100%, and the pitchlock check is the only check that is failing, the only thing that remains is a wiring issue or the switch is broken. I highly recommend you break out the wiring diagram and start checking for open circuits.

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