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Thread: Lack of BusinessFirst SFO-EWR Flights; Fluke, or discontinuation?
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Old Sep 21, 2012 | 1:41 pm
  #31  
BigBossman
 
Join Date: Dec 2009
Location: WAS
Programs: UA1K .455 MM, Hilton and Marriott Gold
Posts: 397
I always thought:

3-digit flight number = UA plane
4-digit flight number beginning with "1" = CO plane

I know that doesn't cover the single and two digit flights, but it helps narrow things down a bit.
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