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One factor in the stresses on the wing structure concerns the O-2A community.
I don't know what kind of stresses have been placed due to firing ordinance from the hard points on the wings? Also pulling G's with the weights on the pylons. Each pylon has a load limit of 350 lbs, thats 700 lbs/wing. If every pylon were loaded to the max (1400 lbs), that would equate to 2800 lbs in a 60degree bank. Higher than that if there were gust loads involved. Inversely, what would happen if the opposite occured, 1400 lbs in a -1.5G loading, pushing up on the wing attach points instead of pulling down on them? I'm sure that Cessna engineering has the calculations somewhere since I assume that they are the ones that determined the load factors.
As far as I know, the USAF didn't track or log the ordinance delivery evolutions on the airplanes.
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