In the ideal world pilots follow the company and manufacturer's standard
operating procedures and callouts during instrument approach procedures
and the crew work together to achieve a safe landing or a safe GO
AROUND.
As pilots, we fit into a normal distribution curve in terms of behaviour
and personality. This is usually heavily screened during recruitment.
However, there is always a margin of error reflected in the statistical
standard deviations and we see the occassional aggressive and/or passive
personality appear.
The situation I described would occur after the FO has called "MINIMUM"
and there is no incapacitation. It may be target fixation in trying to
get the aircraft on the ground, it may be the first stage of some kind
of situational awareness breakdown or it may be the emergence of an
aggressive personality of a pilot who "lives" in the 99.9 percentile of
the normal distribution curve.
The FO is faced with a more difficult task than a captain in
uncomfortable or dangerous situations. Having the knowledge and
experience to realise what is wrong and how to correct the situation may
have to be precipitated as commanding a go around or taking control
after all other avenues have been explored. Captains are not infalable
and first officers are not unskilled, mentally challenged imbeciles.
The situation we are discussing may only happen one time in a million.
Some pilots will never experience a difficult situation like the FO
commanding a go around when a captain descends below a minimum but if it
does happen there will be no time to reflect on the pro's and con's of
doing what is thought to be essential to the safety of the flight.
Mark