Possible Clues:

• Cleared a frosty windshield
• Salted, maybe
• Ready for a cold takeoff
• Cleared for takeoff, in a way
• Cleared, as a frozen windshield
• Cleared a windshield in winter, in a way
• Cleared, as a windshield in winter
• Melted frost from
• Cleared for takeoff?
• Cleared, in a way, as plane wings