Originally Posted by
hans brinker
Sorry, after 30 years it is hard not to speak in allcaps three letter words, here is the English version:
Every 737 has 2 Angle Of Attack indicators, and a warning light for a difference in value between the two. SW have paid extra to display the actual AOA value displayed on the respective pilots instruments. The left pilot seas AOA one, the right pilot sees AOA 2 values. These should be the same, and if they are not seeing the value could help in deciding who is right.
Correct, except the AOA disagree warning light is an optional extra on the 737 MAX, so not every 737 has it.
For example the Lion Air 737 MAX didn't have either of those options installed, so it would have been difficult for the crew to determine they had an AOA disagree situation or not.