What is flap 3 and flap 4 landing?

As the runway is long and the angle of glide slope is minimum i.e 2.5 degrees, flap 3 landing is done, as it easily stops the aircraft in this scenario but if the runway is small then, in that case, the pilot has to use flap-full (flap 4) i.e the pilot has to do flap full landing.



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So a Flap 3 landing would be a landing with the flap handle in the Flaps 3 position, one short of full extension. Why would a pilot want to do that? The ideal landing speed would be a little higher than with full flaps, which might be advisable if the winds are gusty and the runway length is not a constraining factor.

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Embraer ERJ: The Embraer ERJ family, including models such as the ERJ-130, ERJ-140, and ERJ-145, has an impeccable safety record. Throughout its history, this family of aircraft has seen zero fatalities during all its operations, making it one of the safest plane models available.

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Full flaps increase drag more than they increase lift and is used to slow the aircraft for landing. Taking off with 10 to 20 degrees of flaps increases lift for takeoff without incurring a lot of drag, which you don't want for taking off.

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Retracting conventional wisdom on landings. Last year in this column I made passing reference to the technique of retracting the wing flaps immediately after touchdown. The purpose of this is to reduce wing lift and add weight to the wheels, which significantly improves braking effectiveness and deceleration.

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Most airlines IRL use Flaps 30 as the standard. It would go something like (1/5/15/25/30) 40 is used when there are higher wind conditions of the sort to try and stablize the aircraft on approach.

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