4 ms·
Has it been established that the AoA sensor malfunctioned?
by Invictus0 8y ago
Has it been established that the AoA sensor malfunctioned?
- cjbprime 8y agoI believe the Lion Air investigators have made public that there was a 20 degree differential between the two AoA sensors even when they were sitting on the runway before flight. (I don't have a source easily accessible.)
- newacct77 8y agoThat's almost like saying two compasses should agree while standing on the north pole. These sensors need airflow to operate and provide meaningful indication.
- cjbprime 8y agoIt was during taxi for takeoff: https://theaircurrent.com/aviation-safety/the-world-pulls-the-andon-cord-on-the-737-max/ https://theaircurrent.com/aviation-safety/the-world-pulls-th...
- dgritsko 8y agoIs that necessarily true? Based on this article (https://www.flyingmag.com/how-it-works-angle-attack-indicator#page-2 https://www.flyingmag.com/how-it-works-angle-attack-indicato...) it seems like they should be accurate regardless.
- inferiorhuman 8y agoSure, but they maintained their twenty degree difference for the duration of the flight. That's why the one stick shaker started going off shortly after rotation, why autopilot wouldn't engage, and why MCAS was going nuts.
- pintxo 8y agoWhy should an AoA sensor require airflow? And if we are talking about airflow, we are talking about measuring pressur differentialsm right? How to do calculate an angle using a pressure differential?