McCauley 3FF32C501 Propeller governor arm separated. SDR 510019506
RH propeller feathered and engine stopped during take-off. Investigation found the RH engine governor control arm separated from governor, but the control arm securing bolt still fitted and tight. Return spring found in cowl but retaining ring could not be located.
Rotol R4086123F17 Propeller autofeather system failed. SDR 510019186
RH autofeather system failed to arm. Nil defects found on autofeather test.
Rotol R4086123F17 Propeller hub section bearing failed. SDR 510019259
RH propeller hub metal contamination from a cracked/chipped bearing race. Investigation continuing.