Originally Posted by
hans brinker
Until I saw the enlarged picture I did not know that there were 2 on each side,
To torsional rigidity of Piper rag wings is low. Just like the high wing Pipers, the PA-25 has a one lift strut connected to the front spar and one lift strut connected to the rear spar. The lift struts control the twist of the wing as well as supporting the lifting loads.
There have been several PA-25 AD on lift struts and the fuselage lift strut attach cluster. It will be interesting to learn if this accident aircraft was compliant.