Fractures of the pelvis combined with compression fractures of the spine point to much higher levels of vertical acceleration than experienced in an ejection seat.
Correct. Maybe I was not sufficiently clear in my earlier post.
Ejection seats will sometimes cause lumbar vertebral crush fractures but certainly not a fractured pelvis. Not in a young adult male anyway.
At even lower G levels than an ejection seat, you might find a few fractures among a couple of hundred heterogeneous people on a passenger aircraft. However the very high prevalence of these injuries among the recovered bodies here does suggest much higher forces than this.