On: Did a 1997 merger ruin Boeing?

[kevin_thibedeau]

The system was visible if the airline paid for the AOA disagree lights to be installed. Why such a basic feature was even an option is the WTF.

[lovecg → kevin_thibedeau]

I can’t find anything about that. As far as I can tell, the optional AOA indicator would also include the disagree alert which would tell the pilots something is wrong with the sensors, but that had nothing do to with MCAS per se. They still had no idea there’s this whole new system that uses only one of the sensors and repeatedly trims down. Even after the first crash they only went as far as recommend going through the runaway trim procedure without explaining or even acknowledging MCAS’s existence. The pattern of omission is downright criminal.

[WalterBright → lovecg]

> recommend going through the runaway trim procedure

The EA crew did not follow the runaway trim procedure sent to them in an Emergency Airworthiness Directive. The procedure is:

1. restore normal trim with the electric trim switches

2. turn off the trim system

[Cacti → WalterBright]

amazing how many seem willing to overlook this fact for their narrative

[IG_Semmelweiss → kevin_thibedeau]

would that light be sufficient in the 1:30 minutes you have to make a difference, in between the cacophony of alerts and data feeds ?