Airbus, airplane crash, Airplane Flight Manual, Alpha Prot, Alpha Protection, Angle of Attack, blocked AOA tubes, blocked tube, EMERGENCY AIRWORTHINESS DIRECTIVE, Emergency Procedure, France, Germanwings, Germanwings Crash, Germany, Marseille, mountains, Nose Down, Spain
“Airplane Flight Manual – Undue Activation of Alpha Protection – Emergency Procedure
EMERGENCY AIRWORTHINESS DIRECTIVE
AD No.: 2014-0266-E (from December 2014)
includes A320-211, the Germanwings model:
“When Alpha Prot is activated due to blocked AOA probes, the flight control laws order a continuous nose down pitch rate that, in a worst case scenario, cannot be stopped…”
Location exported from Wikipedia
Emergency procedure “inserted” is found on page 3 below.
The Germanwings Airbus accident investigation should have been done by an international entity with no vested interests in Airbus. It is partially owned by the French State and a major employer.
63,000 European jobs at stake:
“Airbus SAS … is an aircraft manufacturing division of Airbus Group (formerly European Aeronautic Defence and Space Company). It is based in Blagnac, France, a suburb of Toulouse, with production and manufacturing facilities mainly in France, Germany, Spain and the United Kingdom.
Airbus employs around 63,000 people at sixteen sites in four countries: France, Germany, Spain and the United Kingdom. Final assembly production is based at Toulouse, France; Hamburg, Germany; Seville, Spain; and, since 2009 as a joint-venture, Tianjin, China. Airbus has subsidiaries in the United States, Japan, China and India.
The company produces and markets the first commercially viable fly-by-wire airliner, the Airbus A320, and the world’s largest passenger airliner, the A380.” http://en.wikipedia.org/wiki/Airbus The one which went down is an ancient A320, known to have many potential problems which need addressing (as elaborated in our post about the Airworthiness Directives). Plus, the French prosecutor is in Marseille, well-known for its history of corruption (the city that is).
Who owns Airbus?
État français (French State): 11,00 %
État allemand (German State): 10,90 %
BlackRock: 4,20 %
État espagnol (Spanish State): 4,10 %
Clearly the French State should not be doing the investigation of the recently downed Germanwings Airbus A320!
See discussion of Alpha Prot flight law here:
“Alpha protection (α-Prot) prevents stalling and the effects of windshear. The protection engages when the angle of attack is between α-Prot and α-Max and limits the angle of attack commanded by the pilot’s sidestick or, if autopilot is engaged, it disengages the autopilot.”
Explains a bit about Angle of Attack: http://youtu.be/2wlvpJLcf-A Others are at youtube.