metroliner and wing draging
to look at a metro 4 or 3 for that matter, one sees the wing
but looking at a Metro 2 or 2a you see a much shorter wing. the spar runs tip to tip.
the wing on the 4 or 3 is extended...but does not run the spar all the way to the tip...its just sort of bolted on without a spar carry through. so it might easily collapse if draged and perhaps allows the plane to flip over?
take a look some time...the ailerons tell the whole story...almost all the way to the tip on the earlier metros, and stops where the wing extension starts on the latter more powerful metroliners