In August 1944, with the Battle of Normandy almost over, Leigh-Mallory was appointed Air Commander-in-Chief of South East Asia Command (SEAC). But before he could take up his post he and his wife were killed en route to Burma when Avro York MW126, in which they were flying, crashed in the French Alps, killing all on board. A court of inquiry found that the accident was a consequence of bad weather and might have been avoided if Leigh-Mallory had not insisted that the flight proceed in such poor conditions against the advice of his aircrew.