Related Clues:

• Aircraft
• Indy racer Guthrie
• Black shade
• Black
• Its slogan was once 'The things we do to make you happy'
• L-1011, e.g.
• Runway sight
• Very dark
• Northwest competitor
• Airline with the old slogan 'Up, up and away'
• See 64-Across
• American competitor
• United rival
• Its hub is in St. Louis
• Ebon