ongoing problem with identifying gear or pressurization! Boeing used the same horn for the landing gear warning horn and for the pressurization system. Intermittant vs steady, on the ground vs in the air!
The helios crash was a classic if I remember right, the pressurization switch was placed in the manual mode by mx and never returned to auto. Crew departed and never noticed the switch was not in correct position. Horn goes off as airplane climbs, crew never noticed the cabin failing to pressurize, eventually they all pass out.
Boeing started installing lights on the dashboard; configuration or pressurization, that was over 2 years ago, lights are still not active!
My oufit has modified checklists to catch this, not to mention a pre-departure brief on the first crew flight of the day!!
That horn can be very distracting in the busy terminal environment.
The helios crash was a classic if I remember right, the pressurization switch was placed in the manual mode by mx and never returned to auto. Crew departed and never noticed the switch was not in correct position. Horn goes off as airplane climbs, crew never noticed the cabin failing to pressurize, eventually they all pass out.
Boeing started installing lights on the dashboard; configuration or pressurization, that was over 2 years ago, lights are still not active!
My oufit has modified checklists to catch this, not to mention a pre-departure brief on the first crew flight of the day!!
That horn can be very distracting in the busy terminal environment.
