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Home > Flying on the Boeing 777 > Does the Boeing 777 cruises at 62,000 feet?
Does the Boeing 777 cruises at 62,000 feet?
Flying - Flying on the Boeing 777
Saturday, 23 April 2011 10:32

KLM Boeing 777 taking off at Amsterdam Schiphol Airport

Hi Capt Lim,

Last December on a KLM flight from Kilimanjaro to Amsterdam, I was surprised to see the Boeing 777 cruising at a flight altitude of 62,000 feet.

I'm now told that I must be mistaken; 45,000 is highest they could ever fly. Could be, but I was so amazed to see that number on cabin display - it stuck in my mind.

Thank you.

Harry.

Hi Harry,

I am sure you are mistaken on the numbers on the video screen at the Air Show in front of you. The Boeing 777 has a certified service ceiling of 43,100 feet and not 45,000 or 62,000 feet.

Even though the regulated ceiling is 43,100 feet, most Boeing 777 cruises at between 30,000 to 39000 feet based on the existing load. The lighter it is (as fuel is burnt), the higher she is able to cruise at but never above 43,000 feet (always rounded up to the nearest 1000 feet)


Singapore Airlines Boeing 777 taking off from Manchester

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Altiude Vs Fuel Economy , Low-rated comment [Show]
How does an aircraft brake during landing?
Hi Captain Lim,
I always wonder how does an aircraft brake during landing
and another question is regarding aircraft tyres. How many landings could an aircraft tyre last before it has to be replaced? I tried to search the internet but could not get the answer.I think you would be the best person to answer my query. Thank you.
HP , 26 Dec, 2011
Air brake and tyre relayering
I think I'll try to help Capt Lim in answering a question about landing... Aircraft brake is obtained by several methods 1. by air brake by raising the spoilers on the wings that caused air drag and thus brake, the other is what they called reverse thrust that is to reverse the engine thrust (however nowadays low cost carriers are recommended to avoid reverse thrust to save fuel), and there are brakes on the tyre themselves but that is a fraction of the braking system, and a tyre will be reconditioned (or you can say relayered) normally after 50 landings depending on the the condition of the tyre. I hope this helps. Donny
Donny , 05 Nov, 2013
Aviation from a different perspective
I believe recommending to avoid using reverse thrust is an unsafe suggestion which Budget airlines don't see. Use proper words. Example. Manual braking is recommended as it is cost efficient. Use Reverse Thrust as appropriate to ensure safety in stopping the aircraft.
Richard , 02 Apr, 2014
Turbulance
What is turbulance? What causes turbulance.
Why aircraft structure shakes during that time?
How long does it take Pilot to get rid of that area?
Why we cannot avoid it?
Prabhakar , 03 Mar, 2016

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