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>  You should also consider that if the nut loosened and the control rod
> turned the effective length of the rod would not alter as it would screw
out
> and lengthen at one end and the opposite at the other.  Both check nuts
> would have to loosen for this to occur.  Mind you if this happened and the
> rod could become completely detached at one end then that is another
matter.

This happened to a friend of mine about 2 years ago on a RV4.  He had
forgotten to retighten the check nuts on the elevator push rod after an
annual.  About 20 hours later, no pitch control.  He landed in a plowed
field, almost totaled the airplane but he and his passenger walked away.
Steve


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Please send your photos and drawings to marvkaye@olsusa.com.
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