I wonder if this will be a requirement for all 337's in the future, in the form of an AD? Spare strap AD's seem to be the FAA solution to keeping 50+ year old airplanes in the air. Just a thought, since there's no economic solution for new wings.
Typically the spar straps go on the lower surface to be in tension vs. the upper surface (compression).
07-31-16, 12:23 PM
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