Nice save 777fly, I saw the original post.
While I doubt very much any Pilots would have those windows open in flight, except in an emergency, I have routinely seen them open on the ground while taxiing out on DC9s, especially when we were doing a max weight take off and had the packs off, MAYBE this is the sort of thing Piper19 has seen.
Incidentally Piper19 your comment about windscreen/window heating is incorrect, these Aircraft still have CV windows (well some do anyway), what if the heating is U/S, the windscreen is shattered or just zero visibility through it, I had a DC9 one day that hit a large Brolga (nearly as big as an Emu or Ostrich), that CV window WAS used that day.
