Originally Posted by
Aluminium shuffler
With a V1 engine failure, certainly, but I doubt it in normal ops. It might have an influence on noise monitoring, and would have a marginal fuel penalty and delay rapid climb based short cuts of the SID, but I don't think it'd be a problem to delay the gear until 400' in normal operations.
Well you don't know when the engine is going to fail do you? It's not like it's a v1 cut or nothing, it could go at any time. So you get the thing cleaned up so you have as much performance as you can in case anything bad happens.