[KineticLensman]

> The best scenario is that they had their last drops of oxygen around hitting the sea; in other scenarios they died from lack of oxygen before hitting the sea.

See [0] for a summary. It appears that at least one unidentified crew member activated the air pack for Smith (the pilot) but not Scobee (the commander). Smith operated some switches after the break-up so was certainly conscious. The crew compartment was tumbling but not so fast as to cause blackouts.

[0] https://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disas...

[1659447091]

Here is the link to add on the Personal Egress Air Packs, and a crew member activating Smiths PEAP

[0]: https://en.wikipedia.org/wiki/Personal_Egress_Air_Pack

[KennyBlanken]

Note that the Challenger crew were not wearing Launch Entry Suits like those shown in the photo.

They were dressed in what amounted to nylon jumpsuits and motorcycle helmets.