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Old 6th Jun 2008, 12:51
  #166 (permalink)  
RWA
 
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Originally Posted by j32wreck
The spoiler panel deployed appears to be panel 5. Panels 2-5 are used in flight to varying degrees.
Thanks. Can someone help me with this quotation for Eric Parkes' 'A320 Notes'?

Spoilers – Five spoilers are installed on each wing. From the wing root to wing tip they are numbered 1 through 5. All are used as ground spoilers. Numbers 2 through 5 (the 4 outboard spoilers) provide roll control. The middle three (2 – 4) provide in-flight speed brakes. If a SEC fails the spoiler(s) it controls is automatically retracted (if extended) and that spoiler(s) deactivated. There is no reversion to other computers.

Spoiler priorities:

Spoilers 1 & 2 - SEC 3, Yellow and Green
Spoilers 3 & 4 - SEC 1, Yellow and Blue
Spoiler 5 - SEC 2, Green
http://www.chipsplace.com/helpful/Ai...FlightControls

My main problem is that, as an old-time, strictly amateur aviator, I haven't the faintest idea what an 'SEC' is.

But the implication of the passage is that there is some sort of possible systems failure that can result in only Spoiler 5 being extended? As appears to have happened in this case?
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