Its very simple, it no longer have enough air flowing over the wings creating lift, and the airplane will stall. Stall is the industry term for when a plane is not developing enough lift.
With that much fuel on board and admittedly not a full payload of passengers, nonetheless, AND in this part of the world temperatures well above average, the airplane would have stalled immediately if not within 90 seconds, depending upon alot of conditions
What happens next, depends upon again, alot of conditions. The characteristics of a particular design of an airplane and immediate reaction of the pilots. A wing will dip, ( first wing to stall) nose will pitch forward)
Having not flown a 777, can not say with full certainty, but common to every airplane the autopilot will automatically disengage. Alot of crap is going on in that moment. None of it good. All bad
What a moronic suggestion by Nance. I can decompressurize an airplane at 35,000 feet and accomplish the same. Ok instead of 13 seconds, passengers might have 30 seconds. I forgot the exact time guidance.
In either case, oxygen masks drop. Giving passengers 15 minutes of oxygen. Again because i would never ever think about it, am pretty certain (99.9%) oxygen masks can NOT be disabled.
I seriously doubt there are many systems in a aircraft that can’t be disabled. The oxygen system is definitely a system that would have a off switch. You wouldn’t want it deploying if there was a fire in the cabin. It would be like pouring gasoline on a match, even with the relatively low flow of the masks included on planes.
I don’t think a B777 will stall 45,000. Sure, you can stall it deliberately.
Service ceiling is defined as the maximum altitude at which and aircraft can maintain a climb of fifty feet per minute.
The chief pilot in my company is a brilliant man. He has thousands of hours in the 757, 767 and 777 with a major airline before being forced to retire due to age. I checked him out in a certain corporate jet. Out company acquired another jet of that make it model, but it had some very minor differences, one of them being service ceiling. The jet I checked him on had a ceiling of FL450. This other aircraft had a ceiling of FL410.
I didn’t make him do a complete new check out in the new aircraft, but I did discuss the difference of service ceilings. He came back from his first trip in the new aircraft and declared that the new airplane was a real dog at FL430. I reminded him that it’s ceiling was FL410. That’s the only mistake I’ve ever seen him make. Again, he is a wonderful pilot.