Maintaining cruise altitude while depressurised
There is an airline over the last 3 months that has maintained a procedure on certain routes at cruise altitudes up to 41000ft, that if a depressurisation occurs, cruise altitude must be maintained until the completion of a 180 degree turn (over 4 mins at 480 knots).
This has recently been discontinued but I am interested in any comments and whether any other airlines around the world would or have entertained such a procedure.