Mayday, entitled Air Crash Investigation in Australia, New Zealand, South Africa, the United Kingdom, India, other Asian countries, and some European countries, and Air Emergency, Air Disasters, and Mayday: Air Disaster in the United States, is a Canadian documentary television program examining air crashes, near-crashes, hijackings, bombings, and other disasters. Mayday uses re-enactments and computer-generated imagery to reconstruct the sequence of events leading up to each disaster. In addition, survivors, aviation experts, retired pilots, and crash investigators are interviewed, to explain how the emergencies came about, how they were investigated, and how they might have been prevented.
Cineflix started production on 13 August 2002 (2002-08-13), with a C$2.5 million budget. In Canada itself, the program premiered on Discovery Channel Canada on 3 September 2003. Cineflix also secured deals with France 5, Discovery Channel, Canal D, TVNZ, Seven Network, Holland Media Group, and National Geographic Channel to take Mayday in 144 countries and 26 languages. The series was received well by critics and nominated for a number of awards. In 2010, Sharon Zupancic won a Gemini Award for her work on the season-seven episode, "Lockerbie Disaster", that depicts the bombing of Pan Am Flight 103 in 1988. A University of New South Wales senior lecturer, Raymond Lewis, conducted a study on teaching strategy loosely based on the series. Lewis's results indicated using the strategy had "a positive effect on learning outcomes" for prospective pilots.