N201MKTurbo

From everything I’ve heard here, the difference between what is described here as an IRAN and an overhaul is maybe a few hundred dollars. The only things that are on the mandatory replacement list they may have overlooked are the Vernatherm and the fuel pump push rod.

Even the term “field overhaul” is kind of suspicious. Does that mean any overhaul not done by the factory? So the best overhaul shops in the country do field overhauls? Or does that mean any overhaul done by a not famous shop? What exactly is a field overhaul?

Nothing. I think a lot of shops are deathly afraid of something that rarely happens, or they are just trying to rip you off.

But that extra 35k isn’t buying you an overhaul, it is buying you a factory reman. Apples and oranges.

We will have this conversation again in two years or so.

I'm glad I haven't paid a shop to work on my plane in 30 years or so.

So you are saying they would charge more for the exact same work just to use the word overhaul? I would find another shop.

More than that sometimes. I was flying almost every day doing service calls for Raytheon Data Systems. I was flying about 450 hours a year back then out of Denver. My territory was Colorado, Nebraska, Wyoming and South Dakota. It can get pretty windy there. Besides I was young and bulletproof. I’ve told the story before, once I landed at Laramie Wyoming and the east-west runway was closed. The wind was 70 KTS out of the west and I had to land on the north-south runway. A Beech 1900 airliner just aborted its third takeoff attempt. I landed on 19 and the captain comes on the radio and compliments me. He made his next takeoff. When the wind is that strong you can land with zero ground speed. I landed on the downwind edge of the runway pointed at the upwind edge of the runway. Landing wasn’t that hard actually. Taxiing was very treacherous. When I got to the FBO I couldn’t throttle back or the plane would get airborne and was skipping backwards. I called the FBO and they came out and tied it down with the engine holding it in place, then I shut it down. See young and bulletproof above. If you want to see some of the equipment I used to service, watch the opening scene of the Movie Airplane. It is clearly visible with the Raytheon logo in plain sight.

So, what are skipping in this IRAN that would keep it from being an overhaul?

You keep saying IRAN, but I think you are describing the difference between an overhaul and a factory reman. For part 91 there is no requirement to ever overhaul an engine. For part 135 there is a requirement to overhaul according to the factory recommended schedule. There is no requirement anywhere to do a factory reman.

What you just mentioned sounds like an overhaul. Lycoming has an SI on what must be changed during an overhaul, the service manual tells how to inspect the parts to see if they are reusable.

I would do it today. I didn’t look at the weather south, but KTRK looks very doable.

I prefer a sweep second hand too. That's why I have an A-13A-1. It is a stopwatch too.

Or MP limitations with updated performance charts. That’s what warbirds that were built for 145 octane fuel do when burning 100LL they just limit MP.

The Mid continent units look nice. Getting that clock serviced will cost a few hundred. For twice that you can have one of those fancy new ones.