wing spar AD inspection holes
wing spar AD inspection holes
I'm sure this has been addressed but when I did a search for 'wing spar AD' I got 36 pages of messages.Anyway, the way I read the AD it does not apply to my 65 hp 7AC, only to horsepower of 90+. My take is that I have a one-time inspection and do not have to open up the gazillion inspection holes for inspection plates that are required on higher horsepower models. My IA believes that I have to open up all those holes and get inspection plates for the next annual.This is a new rebuild with new spars,etc. a all-new wing. Regards, Dave Griffith N2908E '46 Aeronca 7AC
Re: wing spar AD inspection holes
Dave,
Your take would be my take and my IA would also agree. Especially with new spars and a complete wing rebuild. I suppose someone could make the point you can't really inspect all of the spars unless you completely open the wing up, but there are places where known problems have occurred: i.e. at the lift strut reenforcing plates and the butt end, etc and usually a ground loop or some kind of overstress has to occur before there's even a problem there. There has to be some common sense as some of the original spars are still flying with no problem.
MikeB
Your take would be my take and my IA would also agree. Especially with new spars and a complete wing rebuild. I suppose someone could make the point you can't really inspect all of the spars unless you completely open the wing up, but there are places where known problems have occurred: i.e. at the lift strut reenforcing plates and the butt end, etc and usually a ground loop or some kind of overstress has to occur before there's even a problem there. There has to be some common sense as some of the original spars are still flying with no problem.
MikeB
Re: wing spar AD inspection holes
I would always do a reasonable inspection, especially outboard if there has been a ground-loop.
Otherwise the wood gets stronger with age so enjoy!
Joe A
Otherwise the wood gets stronger with age so enjoy!
Joe A