Bloody sight safer than going off the far end of the runway and killing people.
So can the FO put the gear up at 100'?50'?
FO can command a GA and this should be done by calling "GA" and advancing TL's.If the Captain resists and the FO is
100% sure that to continue the approach and landing will result in mortal danger,then yes okay he/she can do whatever is necessary,including raising the gear(200' at latest).But this is extreme action designed only to prevent a disaster.Its not to be taken because of SOP infringement alone.
The Captain is PIC,not the FO.
I agree its a fine line and a tough call for the FO but taking control from the PIC is only to be done when a clear and present danger is self-evident and the PIC refuses to heed any warnings.
We already have an indication in India that ATC are now taking it upon themselves to command a GA for reasons that are clearly beyond their jurisdiction(Indigo).We dont want FO's taking control or putting the gear up because the plane's a bit high or a bit long .The remedy must fit the problem.An Asian airline once banned all FO landings because of one overrun in wet weather.Disproportionate and counter-productive response.Lets not see the same mistake made here.