24/11/2024
There’s nothing quite like a windy day for the news channels to send a camera crew and hysterical reporter to an airport. Regardless of, gale tornado hurricane or breeze an aircraft is not permitted to land (or take off) unless the wind at the time immediately prior to that action is within specified and promulgated limits. For any aircraft there is an absolute wind speed in which a plane is not allowed to operate. If I recall correctly we could not taxi the Boeing 757 in a wind exceeding 70 mph or so.
Operationally an aircraft is not permitted to land (or take off) with a tailwind exceeding 15 knots, it may vary with aircraft type but tailwind limits are roughly the same. The important wind speed is the one across the runway. Its maximum is about 35 knots depending on the plane. If the runway is wet that limit reduces to about 25 knots depending upon the plane.
So as long as the wind is within those limits an aircraft is legally permitted to land.
However on a gusty day where the wind speed and direction may vary significantly the pilot may deem that during the moments before touchdown the wind may be too variable to keep the nose in the exact position for landing. The wind may vary ( even within the limitations) such that the aircraft is not positioned on the centre of the runway. In these conditions the pilot would/ could elect to Go Around, even if the plane had touched down momentarily.
In the same way that a ship bounces around on waves, so a plane does in the moving air.
There are variations sometimes according to runway condition, type and length. Other variations may occur according to on board equipment.
Any explanation more dramatic than that is pure bull s**t.
But it’s great fun for journos who don’t concern themselves with
explanations unless they involve adjectives like, terrifying, uncontrollable, scary, screaming passengers , worst ever or unprecedented.
Keith