Hi,
After analyzing a paper from June 2009 (below) on UAS
I have some questions:
1) Is it dificult to (fast) detect an UAS? Is it important?
Unreliable speed is one of the difficul situations that a pilot has to face. Once the failure has been identified, a procedure, based on pitch angles and thrst settings, will assist the pilot in safely flying the aircraft.
But the main difficulty is to rapidly detect an unreliable speed situation. Reaction time is crucial, since the aircraft may stall and overspeed conditions could cause aircraft damage.
2) Is it important to detect? Why?
An unreliable speed situatio may be difficult to identify, due to the multiple scenarios that can lead to it. Therefore, training is a key element: indeed the flight crew's ability to rapid detected the abnormal situation, and to correctely handle it, is cricial.
In case of any doubt, the pilot should apply the pitch/thrust memory items, and then refer to the QRH to safely fly the aircraft, and to positively determine the faulty source(s) before eliminating it (them).
3) AF447 crew (PF or PM) identified the UAS?
4) If no, this (fast identification) would be important? (safety could be at risk?)
The quoted text comes indeed from an Airbus SAS Engineering "source"?
Link is:
1st segment:
http://aviationtroubleshooting.com.br
2nd: /2009/06/af447-unreliable-speed-by-joelle-barthe.html
Please copy and paste both segments in your browser (without space, check this) The "editing tool" (that ALWAYS inserts the link), sometimes change it causing error in the resulting URL.
(It seems there is a glitch here in PPRuNe "editing" tool.)
Will check.