wrote in message . net...
I was told by an aircraft appraiser that there's an expensive AD on the 108 hp
C2C version of the Lycoming O-235 that comes due at overhaul time. He didn't
have the AD number or any details, and I haven't been able to find out much
more. Does anybody know which one he was referring to?

The only two biggies that I could find had to do with the crank being
worked on by a particular shop and if the oil pump had a specific part
number impeller in it.

Craig C.