PPRuNe Forums - View Single Post - Ethiopian airliner down in Africa
View Single Post
Old 17th Mar 2019, 00:17
  #1673 (permalink)  
wiedehopf
 
Join Date: Jul 2014
Location: Germany
Posts: 344
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by slip and turn
If there was a static pressure increase at rotation (if that is a known feature of the aerodynamics at high AOA leading to the "below ground" 05:38:47.714 altitude of 7075') it would affect cockpit IAS, and VS indications too, would it not? And if that is evidence of an aerodynamic anomaly, and it is not a spurious measurement, then might other static pressure anomalies exist at the static port positions at high AOA with this airframe?
https://www.flightradar24.com/blog/w...ary-Report.pdf

Diagram on page 14:

Large left side AoA overread leads to left altitude underread by an estimated 100-200 ft (no proper scale).
(AoA is a corrective term in the altitude and IAS calculation)

So that FDR readout combined with the FR24 altitude data from ET302 could point to the left AoA sensor reading high just like with LNI610.
This is speculation of course but the whole pattern of the flight just feels much too familiar.

A somewhat shallow climbout is also to be expected when the stick shaker is going off, instinctual reaction is to reduce climb rate.
wiedehopf is offline