Possible Clues:

• Received vehicle identifier, or wheels
• -- Bannister, first person to run a mile in under four minutes
• A jolly fellow no longer up the pole - at sea
• I hear you, Mister Federer!
• Moore's OK
• Bannister or Moore
• Cockpit acknowledgment
• "Message received and understood"
• Radio acknowledgment
• With 67-Down, 'Moonraker' star