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Old 4th Jun 2009, 10:28
  #853 (permalink)  
AIEXPATS
 
Join Date: May 2006
Location: McMurdo Base Antartica
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"advisory regarding cabin vertical speed"

For the A330/340 rated - a question.
This will be the next A330/340 sim LOFT session once the facts come out!
Is this "advisory" an ECAM message also?
Looking at all these ACARs messages prior - what electrical power losses would cause the Controllers to default/fail?
If for example all power is removed - does the system enter in FAILSAFE closed position for the valves (operating the Ditching Valve)?
Is there an situation you can think of where the Outflow Vlv/s would not close fully to control the cabin altitude - perhaps causing this vertical speed advisory?
Meaning if the sequence of events, ECAM warnings, etc. has the 3 cockpit crew dealing with all the previous issues, now comes an eventual CABIN HIGH ALTITUDE.
The next problem for the Crew would have been a "controlled" expeditious (2-3000 ft/min) or maybe even an emergency descent (shy of MMO with Speed-brakes)?
As we know that would make it extremely difficult to avoid and very easy to literally drop right into even more severe weather and the eventual turb., icing, spacial orientation and performance issues.
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