There is the assumption being made that that the warning light was noticed immediately when it was illuminated. That is not always the case, and it may have just been noticed when they were doing a check. Might be an honest belief as that is when they noticed it so they made the same assumption.
gimmepars wrote:
pelmet wrote:
"As the flight crew levelled the aircraft at the cruising altitude of FL240, the check pressurization light illuminated."
How'd they get to FL240 before the light came on if the bleeds were never turned on after takeoff?
Think of all the pilots, every year, that do not hear the gear warning horn and flop the plane in gear up.
Two crew and checklists go a long way to resolving these kinds of issues.....or should. Unfortunately humans do not always follow rules ( not speculating at all about this incident..generic).
And basic flight training instills in too many pilots the belief that they must take action, and quickly.
Getting pilots to slow down is a training challenge. Add to that the hours and hours of flying without a glitch. Time since the last training when pilots reviewed abnormal situations, and intangables like crew familiarity and familiarity with the aircraft. SOPs, checklists, crew priorities all can be ignored, and the habit can set in fast.