FlyerTalk Forums - View Single Post - United's 777s Getting Boeing Performance Improvement Package
Old Mar 23, 2011, 9:53 pm
  #12  
rkkwan
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Originally Posted by SFOSpiff
Out of curiosity, how long will an aircraft be out of service for this installation? There's already a lot of unpredictable shuffles due to 777 upgrades and repainting.
http://www.boeing.com/commercial/aer...icle_02_1.html

Drooped aileron is software only - 3 hours.

Vortex generators - overnight.

Ram air - several days, so should be done with heavy maintenance.

Can be ordered and done all separately, with 60% of the benefits achieved with just the first two. Amazing that UA hasn't even done those two already.
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