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Old Aug 31, 2011, 5:17 am
  #4  
jackal
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Join Date: Mar 2004
Location: SGF
Programs: AS, AA, UA, AGR S (former 75K, GLD, 1K, and S+, now an elite peon)
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How did the AA interchange service work?

The map above indicates "through plane service."

Was it one carrier's aircraft and another carrier's crew or something?
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