More from Seattle Times:
Tajer said the American pilots were told in the meeting that on the flight deck of their 737 MAXs, the AOA disagree light would have lit up on the ground and so, because that’s a “no-go item,” the plane wouldn’t even have taken off. However, Tajer said that within the last two to three weeks, “we are now learning that, unlike Boeing told us in November, the warning light actually is inhibited on the ground.”
“We are being told by Boeing that the AOA Disagree Alert … is inhibited until 400 feet above ground level,” he said Sunday. “We are currently awaiting written confirmation of this AOA Disagree Alert limitation as it is not detailed in any 737 flight crew manual.”
https://www.seattletimes.com/busines...t-told-no-one/
At 400 feet, the light comes on, then what? (the 5 second memory rule?)
AoA/MCAS could be programmed to take account of many factors that could occur normally and fail-back in other circumstances.
It already does. AoA is never a direct reading from the vane, it passes through many levels of algorithms depending on circumstances and conditions.