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Home > Flying on the Boeing 777 > What are the flap extension speeds on the Boeing 777?
What are the flap extension speeds on the Boeing 777?
Flying - Flying on the Boeing 777
Tuesday, 11 December 2007 20:44

Hi Captain,

I have just finished DCAT exam. I will know my result by next week. Guess what? I have started my flying lesson 2 days ago and will continue for another one month (no ground school). At the Flying Academy, they train us on the Piper Warrior PA-28.

I have got some question for you. In the Boeing 777, what is the maximum IAS to extend the flaps? At what IAS do you rotate when taking off, and what is the maximum IAS when the aircraft touches down?

In the Piper aircraft, there are 0, 10, 25 and 40 degrees flap, how about the Boeing 777? Is it necessary to trim when flying nose heavy or tail heavy (as the aircraft flight control is based on 'fly-by-wire')?

Now that I have started flying, I have thousands of question for you, but that's all for the time
being. Wish me luck!

Fariz.

Hi Fariz,

I don't think I have the time to answer all your technical questions on the Boeing 777 because I intend to restrict my Website, whenever possible, to interesting Air Travel questions only. If I start entertaining these questions, it will never end. Wait until you are on the Boeing 777 in the future and concentrate on your Piper Warrior now. Many others have asked me the same type of questions which are found in the Airplane Operating Manual - thousands of them as you have said!

Just not to disappoint you this time. The Boeing 777 lift off speed varies, and it depends on the weight of the airplane and the flap settings, can't give you a precise figure - around 110 to 120 knots. Lands between 125 to 150 knots. Maximum flap extension speed is 250 knots. Flaps varies from 1, 5, 15, 20, 25 and 30. It has an auto trim, so no manual trimming is required.

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auto trim Boeing 777
Fist of all compliments for your nice website.

I have a remark about trimming on the 777. The auto trim function on the Boeing 777 is only for configuration changes at the existing speed. When increasing or decreasing speed manual trimming is needed. Only in a smal speed-bracket around the trimmed speed the autotrim function will take over.

With kind regards,

Eric van Droffelaar
Co-pilot 777
KLM, Royal Dutch Airlines
Eric van Droffelaar , 06 Feb, 2010

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