Which is the maximum altitude for commercial airlines?
Which is the maximum altitude for commercial airlines?
A typical commercial jet cruises at around 28-35,000ft (up to 6.6 miles of altitude).
The main exception was Concorde which was designed to fly at a higher altitude at around 45,000ft.
That depends on its weight, and its weight depends upon the trip length, since trip length dictates how much fuel they carry. And obviously, the passenger load. It also depends on whether the aircraft is flown for maximum range, or maximum speed, or somewhere in between (which is usually the case). So there's not one magic number. An empty 787 for example probably has a service ceiling around 42,000 feet. Loaded to maximum takeoff weight, that ceiling drops down to around 30,000 feet. As the flight progresses and fuel is burned off, the aircraft's weight will decrease, and on long trips the aircraft will make one or two step climbs up to a higher cruising altitude.
One time, on a clear day but really rough flight, the pilot said we were going to 42,000 feet in order to over-ride the turbulence, which it pretty much did.
Looking down, it looked the same as 36,000 feet, but looking up, the sky was somewhat darker.
I think we were in a 727.
A quick Google search shows several commercial aircraft are certified to fly at 41,000 - 42,000 feet, including 727's, 737's, DC 10's.
Early production 747's were good to 45,000 feet, later ones to 43,000 feet.
The now retired Concord had a maximum cruise altitude of 60,039 feet.
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