[libertylover]

Thanks for the info. There’s lots there I didn’t know.

Yes, an obstructed static port can also cause an erratic altimeter reading also. But I know from my own repair experience that a dirty AOA probe will cause WILDLY erratic readings.

[Yo-Yo]

Yes, an obstructed static port can also cause an erratic altimeter reading also. But I know from my own repair experience that a dirty AOA probe will cause WILDLY erratic readings.

There are two types of AOA sensors. Supersonic aircraft, like the F-111A that I worked on, usually have the pressure differential type, and subsonic aircraft including most Airbus and Boeing aircraft, including the MAX, use the vane type.

I suspect that in your Air Force days, like mine, that the pressure differential type of AOA sensor was used, and the air pressure was also used somehow in the altimeter.

The MAX uses the vane type, and cannot possibly affect the altimeter.