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- Nov 16, 2021
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Are palnuts required on A65 cylinder nuts? My A&P says they're required but they will interfere with reinstalling a Reiff preheat system.
I found a Lycoming Service Instruction No. 1029D that says palnuts are not required on any of their engines but leave it up to the A&P whether to install or not.
I couldn't find anything for Continental but I looked at the Continental illustrated parts catalog. They don't list A65 engines since they're not supported anymore but for O-200's palnuts used to be required. Now the parts catalog only show flanged nuts for the O-200 and that's what I've seen on newer Continentals.
I found a Lycoming Service Instruction No. 1029D that says palnuts are not required on any of their engines but leave it up to the A&P whether to install or not.
I couldn't find anything for Continental but I looked at the Continental illustrated parts catalog. They don't list A65 engines since they're not supported anymore but for O-200's palnuts used to be required. Now the parts catalog only show flanged nuts for the O-200 and that's what I've seen on newer Continentals.
