PPRuNe Forums - View Single Post - Ethiopian airliner down in Africa
View Single Post
Old 14th Mar 2019, 21:51
  #1371 (permalink)  
Photonic
 
Join Date: May 2010
Location: PNW
Posts: 76
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Lonewolf_50
For anyone, last question.
MTBF of AoA probes. Who is Boeing's supplier? (If the AoA prob, or its signal to the FCC, doesn't go whacky do we ever hear about any of this?)
We had a fairly long discussion about pitot tubes after AF447 went down, and commentary about Goodrich probes that AB was working on putting on their fleet versus a Thales one. Are AoA probes held to the 1 x 10^-7th hours failure criteria, or a 1 x 10 ^-9?
I don't have that info, but as a general comment on sensor reliability, up-thread somewhere there is a post by a NG pilot mentioning that a bird strike took out an AoA vane on one of his recent flights. Obviously the sensor should have the highest possible MTBF, but the system as a whole needs a safe method to recover from a sensor that can be taken out that easily, and that randomly.
Photonic is offline