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In reply to the discussion: BREAKING: Boeing 777 crashes at San Francisco Airport. [View all]TheMadMonk
(6,187 posts)It's the error bar in the harsh statistics involved in kissing the ground as gently as practicable with several hundred tons of aluminium, cargo and flesh.
A pilot may use it if he has to, and in practice, (unless noise abatement/structure avoidance regulations are breached) no one raises a stink if he doesn't use too much of it, but best practice still has a pilot putting down BEYOND the displaced threshold.
Choice here is a pilot who made multiple mistakes as per your various suggestions, without corroboration from ATC recordings, or a pilot thinking he knew exactly what he was doing up until the moment he realised he'd fucked up big time, and it was that fraction of a second too late to correct.
Cockpit recorder may well tell a different story, but until it does my money's on the pilot deliberately shaving his approach and screwing the pooch big time.