If the flight has been of unusually short duration, such as due to an emergency just after takeoff requiring a return to the airport, it may be necessary to dump fuel to reduce the landing weight.[1] Some aircraft are unable to dump fuel, however. For example, on 3 February 2020, Air Canada Flight 837, a Boeing 767-300, suffered a rear tyre failure during take-off at Madrid–Barajas Airport on its way to Toronto, causing its left engine to catch fire. The pilots managed to extinguish it by shutting the engine down, but as 767-300s are not designed for fuel dumping, it had to stay in a single-engine holding pattern for over 4 hours to burn fuel and achieve its maximum landing weight, while an SAF fighter reported minimal damage to the landing gear.