"Also, I think you got the links switched."
No, the first one, in the air, you can clearly see the cylinders while the prop is blurred. In the second one, if you zoom in on the nose, the cylinders are blurred and look like they're turning with the prop.
"Could still be any number of things causing the engine to cut out. Under the circumstances, I doubt he even got around to trying a restart."
Gee, did they even have starters on those? And yeah, any number of things could have caused it. The net's a little thin on the engine. but I was a little rushed in my lookups:
"Powerplant: 1 × Kinner R-540, 160 hp (120 kW)"
But there were variations on the engine with the different plane models.
This is sorta like us analyzing an ND, but curiosity dictates discussion and speculation. I guess I ought to wait until the FAA releases the info.
Terry, groundlubber, but fascinated with aviation, 230RN
REF:
http://en.wikipedia.org/wiki/Ryan_PT-22_RecruitETA Good info on the rotaries, RC, thanks. Posted right after/during your post.