Annual Inspectionas

JLemons · #1 07-19-25, 08:57 PM

I've been looking at some information regarding the cost to maintain a 337. If you are an A&P mechanic and a 337 owner, how much are you saving by doing your own inspection and having an IA check your work?

hharney · #2 07-20-25, 06:33 PM

A lot, probably at least 50% for me the last 20 years. Know your plane too

MD83driver · #3 07-28-25, 06:07 PM

If I wasn't an A&P, I.A., I, personally, would not own any airplanes. Labor is the majority of the cost in airplane ownership. It took me 2 and a half years to get my P337H airworthy after sitting an extended period of time. $90,000.00 equivalent labor rate. For me, it was a retirement project after retiring from professional flying.

Skymaster337B · #4 07-28-25, 09:46 PM

I recently met a fellow owner and he just paid $20k for an annual.

hharney · #5 Yesterday, 08:51 PM

I don't think $20k is unusual out there. It's going to depend on the shop, what they do, how many parts they source, labor. Guys we are talking about a very complex twin engine Cessna aircraft. The problem is the model is not worth much in the market today. You can buy them for less than a 172. If we really want to keep these birds in the air and are willing to pay what a Baron or 340 would cost today for annual maintenance it's going to be expensive. If you can take the time and do the majority of the labor yourself then you can save some serious dollars. But once you drive up to Technicare or some large maintenance facility it's going to cost some serious money to do the annual. These big chains don't allow you in the shop either. If Cessna made this 337 today how much would it cost to purchase? I would guess north of a million or more. So a $20,000 annual for a $1.3 million dollar plane is peanuts. Just sayin'
We need to understand what we have and where the cost of service really is today