Related Clues:

• Delta wing flap
• Aerodynamic surface on car
• Device which improves car's roadholding at speed
• Flap with second tanker coming under pressure
• Book read from right to left by eastern flight controller
• News story published to ruin another
• Feature of aeroplane that provides fresh energy for ascent
• Plot disclosure
• "___ alert!"
• One vandalising part of car
• Sore lip (anag.)
• Almost ruined front of racing car's aerodynamic fixture
• Part of a racing car
• You may want to stop reading when you see this
• "The butler did it," maybe