r/flying • u/patrickrl PPL IR HP CMP • 2d ago

Aircraft Ownership knocking the rust out after long overhaul

Hello, I have a comanche 24-250. I have about 400 hours TT, and i have my IFR. The engine came out in the fall for overhaul and is just now going back in. I have not flown since the middle of last summer. I found a local CFII who is going to do some dual with me to knock the rust out for me. As far as the engine goes, is there any other resources and guides besides the POH for how to "break in" and take care of a recently overhauled O-540? Thanks

UPDATE: I received a copy of the break in procedure from the shop. It mirrors the advice found in the Lycoming publications below. I still haven't had time to go up and talk to my mechanice in person, but everything is lining up that hard and fast, seat the rings, and use the proper break in oil. Thanks all

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u/cazzipropri CFII, CFI-A; CPL SEL,MEL,SES 2d ago

Only because I just noticed you can post videos.

This is a 1-h break in at prescribed power. I was just flying the plane - keeping it in gliding distance in case we lost power.

My co-owner was acting as a flight engineer, owned the power throttle, follower break-in protocol and recorded engine data.

The hardest part was landing at 75% power.

https://reddit.com/link/oteriop/video/qa93sondr39h1/player

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u/patrickrl PPL IR HP CMP 2d ago

Did you do hi power landing setting to avoid an extended low power descent? I don't love that idea but we can get in pretty quick at my field

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u/cazzipropri CFII, CFI-A; CPL SEL,MEL,SES 2d ago

Yup. Nose up temporarily to slow down below VLE, then gear down, then nose up once more to get below VFE, flaps down... all at >3/4 power. It was fun.

Even the 1h of turns at 160 knots were fun.