Related Clues:

• Successor to Allegheny Airlines, for short
• Airline whose last flight was Dec. 1, 2001
• USAir rival
• Former rival of Pan Am
• It was bought out by American Airlines
• A couple in Scotland
• Co. that launched its Ambassadors Club in 1952
• Early Boeing 737 customer
• It often flew FDR during WWII
• Pan Am was its rival
• Erstwhile airline abbr.
• 'The Aviator' carrier
• American acquisition in 2001
• Carrier that folded into American in 2001
• H. Hughes once controlled it