On Feb 22, 6:53 pm, "Ebby" wrote:
I was following the thread on Bendix and Slick magnetos and contacted
several repair shops regarding getting my magnetos overhauled. I got a
message back from one shop telling me they didn't overhaul magnetos they
only repair them. What am I missing? I don't believe my magnetos are
broken but they do have a few hundred hours on them. If I get them repaired
what would be repaired? I'd get an 8130.3 from the shop with the repaired
magneto. Oh, knowledgeable ones in the group please enlighten me.

--
John "Ebby" Ebensperger
Hatz Classic s/n37
Camden, NY

This is from the Canadian Aviation Regulations; I can't find
similar definitions in the FARs, but I would imagine that wherever
they are, they're not far off:

CAR 101.01:

"overhaul" - means a restoration process that includes the
disassembly, inspection, repair or replacement of parts, reassembly,
adjustment, refinishing and testing of an aeronautical product, and
ensures that the aeronautical product is in complete conformity with
the service tolerances specified in the applicable instructions for
continued airworthiness.

"repair" - means the rectification of deficiencies in an aeronautical
product or the restoration of an aeronautical product to an airworthy
condition.

End of quote.

So an "overhaul" ensures that the unit is returned to within new
factory specs. A shop probably has to comply with some federal
requirements to be called an "overhaul" shop, and would need test
equipment and all sorts of special tools as well as all the parts that
might be required. That shop could call the product overhauled.
A "repair" is simply the fixing of whatever is haywire so that the
unit will work again. In a magneto, replacing the points, condenser
and perhaps distributor block and rotor would probably make things
work well again, and it would be just a repair. The mechanic could not
certify it as "overhauled" but it would still be a legal "repair."
Cheaper, too.

Dan