Originally Posted by
DaveReidUK
Wasn't the AoA indication on the PFD (presumably with each side driven independently) a payable option on the MAX from the start, albeit one that few, if any, operators took up ?
IIRC, it was bundled with the "AOA DISAGREE" annunciation option.
The AoA disagree indicator was supposed to be standard and was incorrectly linked to the AoA indicator option. Due to be corrected in a planned update to the software, but not considered serious enough to warrant an immediate patch.