Possible Clues:

• Carpet securer
• One might pin down runner in flight
• In-flight bar: it might pour this
• It's laid across the line of flight
• As torrid (anag.)
• Fixture on flight seeming to come down in heavy rain
• Securer for carpet
• One lying down between steps
• Bar on a flight
• That keeps the carpet down on the flight going up (5-3)