Overview
- This summer carriers used established safety steps such as asking for volunteers, offloading baggage or cargo, carrying less fuel and occasionally canceling flights when high runway temperatures made planned takeoffs unsafe.
- Pilots and safety experts say hotter air is less dense so wings produce less lift and jet engines make less thrust, meaning some aircraft cannot reach safe takeoff performance at planned weight and runway length.
- The Federal Aviation Administration does not set a single maximum takeoff temperature, so limits and responses depend on each aircraft’s make, weight and the airport’s elevation and runway length.
- Weather analyses show very high‑temperature days are becoming more common at vulnerable airports and operators are already seeing impacts such as American Airlines offering compensation for volunteers on a Las Vegas flight that needed weight reduction.
- Airports at higher elevation, with short runways or strong urban heat‑island effects face the greatest risk so airlines are shifting schedules to cooler hours and industry observers say planners should consider longer‑term fixes such as infrastructure changes and revised routing to reduce future disruptions.