Related Clues:

• Air-traffic aid
• "M*A*S*H" character with great hearing
• 'M*A*S*H*' palindrome
• Speed gauge
• Aircraft equipment
• Gun in a dugout
• Air-traffic detector
• Defense mechanism?
• Airplane tracker
• Guidance system at sea
• Detection device
• Control tower tracker
• Plane tracker
• Classic TV's O'Reilly
• Burghoff role