Originally Posted by
hans brinker
I think it could be either the wing brace strut being pulled out of it's attachment by the reduction in upward force on the wing while the load was dropped, followed by the wing folding up during the pull up, or the wing strut brace buckling due to the increase in force during the sharp pullup after the drop.
Just so I can follow along - What do you mean by "brace strut"? The terms I'm familiar with are "lift strut" and "jury strut". The lift struts on a PA-25 carry the lifting load in compression. The jury stuts keep the lift stuts straight so they can support the compression loading.