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When my LNC2 was built, the intended tiedown rings were attached to
springloaded clevis pins that are no longer manufactured. Unfortunately, a
set of these pins did not come with the aircraft when I purchased it.

I've been told by Vern that to fix the problem the tubes imbedded in the
wings and tail intended to receive the clevis pins should be tapped to
receive bolts of similar size.  Has any one of you done this?  What is the
proper bolt size?  Because the outside edges of the tubes have been faired
into the adjoining surface and painted, it's impossible for me to see how
thick the tubes are.  Obviously, I don't want to chew through or drastically
weaken the tubes with too large a tap. What cautionary notes would you add?
Clearly, I would prefer never to leave the plane in the open, but that is not
always an option.

Thanks,

Byron Fox
N3144C

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