Magnetos

REBELER · Post by **REBELER** » Tue Jun 15, 2010 8:50 pm

I have a Lycoming 0235 which is aproaching 500 hrs s/n, I am told the magnetos need to be inspected, any info regarding this would be greatly received. Any ideas on who can do this if it is required and a guide on cost will help, I 'm in yorkshire.
regards Simon.

mike newall · Post by **mike newall** » Tue Jun 15, 2010 9:59 pm

It is a Service Bulletin, not a directive. If they are operating OK, I would suggest you continue and leave them alone.

Rod1 · Post by **Rod1** » Tue Jun 15, 2010 11:03 pm

Do what your inspector suggests?

Rod1

REBELER · Post by **REBELER** » Wed Jun 16, 2010 11:11 pm

Thanks guys,
thats one for, one against and one sat on fence!

Well having flown tonight, and had a really good preflight engine run up ,mag check and perfect flight, I would say my mags are working as designed.
Of course my inspector will prob 90 want them removing and serviceing but I feel better informed now ,cheers
Simon

gasax · Post by **gasax** » Thu Jun 17, 2010 8:23 am

Given the time iit takes to accumulate 500hrs on most permit aircraft (or even CofA for that matter) the 500hr overhaul / check is a pretty good idea.

Mine came back with new points in both, new bushes in one and a new coil in the other. they were also nicely painted - which I think was just to cushion the financial blow!

Having had several magneto failures over the years I simply don't trust them. Wait until it happens to you and you'll end up doing the same.

Incidently the last pair I got overhauled were approximately 18 years old...........

Rob Swain · Post by **Rob Swain** » Thu Jun 17, 2010 10:29 am

My inspector is a nice sensible chappie, and a licensed engineer to boot. He doesn't often come up with things he wants done, and normally gives warning that he'd like something done at the permit renewal before, which gives us a year to get it done.

He likes the mags to be inspected / serviced at 500 hours.

And before anybody suggests it - no he doesn't do the mag servicing himself. I think he recommends McLaren (sp?) at the moment. Last time we had any done it was by Brinkleys.

Good point gasax makes - it takes years for most permit aircraft to reach 500 hours. Even at a flying rate of fifty to a hundred hours a year you are looking at between 5 and 10 years (and winters!) between services.