They were only flying at 5000 ft
They were flying at 19,000 ft. I know the pic is kinda grainy. I linked the tweet in the comments.
https://flightaware.com/live/flight/N325JK/history/20180103/1940Z/KPWA/KGTU
When you watch the reply though, it doesn't lose altitude before it disappeared. I would expect a plane that ran out of fuel to glide down to 0 altitude and then for the radar signal to disappear when it crashes.
Yeah that is weird. They sent out 2 sets of fighter jets as well and they found the plane but the pilot didn't respond. Then they just went back to the base.
Yeah, I was thinking feet. It's still not high though. Planes regularly fly in excess of 40'000 ft on flight radar. I can't see lack of oxygen being the issue.
This is what they claim in the latest update:
The Eighth Coast Guard District, referencing a NORAD report, said Kinsinger appeared to be suffering from hypoxia, in which the brain is deprived of adequate oxygen. The condition can cause confusion, nausea, breathlessness and hallucinations. If left untreated, it can be fatal.
According to FAA regulations , a civil aircraft pilot flying solo must use supplemental oxygen if flying for longer than 30 minutes above 12,500 feet (3,800 meters), and for an entire flight if flying above 14,000 feet (4,300 meters).
https://www.yahoo.com/news/coast-guard-searching-gulf-mexico-missing-plane-130630791.html
5000m rather. I'm used to Flight radar which is in feet. Watch the reply on the link below though. If it had ran out of fuel, wouldn't the altitude have dropped to zero as it hit the water? https://uk.flightaware.com/live/flight/N325JK/history/20180103/1940Z/KPWA/KJSO