Originally Posted by
Longtimer
". . . The planemaker will include a warning light in the new 737 Max planes and retrofit all existing ones, according to the report."
But an AoA indicator will continue to be an option:
Doomed Boeing Jets Lacked 2 Safety Features That Company Sold Only as Extras
From the above article:
The angle of attack indicator will remain an option that airlines can buy. Neither feature was mandated by the Federal Aviation Administration. All 737 Max jets have been grounded.
“They’re critical, and cost almost nothing for the airlines to install,” said Bjorn Fehrm, an analyst at the aviation consultancy Leeham. “Boeing charges for them because it can. But they’re vital for safety.”