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> Southwest plane was above V0 and couldn't abort It's up to investigators to find out. Pilots definitely can (and have the right to) abort after V1, if they c
by reisse 4y ago
> Southwest plane was above V0 and couldn't abort
It's up to investigators to find out. Pilots definitely can (and have the right to) abort after V1, if they consider it safer than taking off. Before V1, you can be sure that abort is safe, after V1, you have to weigh risks of high-speed abort against risks of continuing flying, but staying on the ground is still possible.
Yes, and nitpicking - decision speed is V1, not V0.
- deleted 4y ago[deleted]
- kayodelycaon 4y agoYou only abort after V1 if the plane can’t fly. Aborting for any other reason is more dangerous than continuing takeoff.
- reisse 4y agoNo, it's not (always) more dangerous, please read the operation manuals if you don't believe me. Let me put it another way. V1 is not the speed after which you cannot abort, V1 is the speed after which you can attempt to takeoff. Or, quoting the Boeing flight manual, > V1 is the maximum speed at which the flight crew must take the first action to reject a takeoff. If something happens _before_ V1, pilots must abort takeoff, period. However, if something happens after V1, pilots can still make a decision to stay on the ground. Furthermore, V1 is calculated so that the plane can stop before the end of the runway even if one of the braking systems is not working properly (e. g. one of the engines is out and reverse thrust cannot be used). On a fully working plane, the actual distance necessary to stop will be lower. Then, there is always a safety zone right after the runway, which is not taken into account for V1 calculation. Anyway, the investigation will thoroughly consider all the factors, let's wait for the results.