L-1049 Super Constellation registered VH-EAC crashed on take-off at Mauritius en route to the Cocos Islands, Australia. The take-off was aborted following an engine failure, the aircraft ran off the runway, and was destroyed by fire. There were no fatalities. On 23 September 1999, Qantas Flight 1, a Boeing 747–400 registered VH-OJH, overran the runway while landing at Bangkok, Thailand, during a heavy thunderstorm. The aircraft came to a stop on a golf course, but without fatalities. The Australian Transport Safety Bureau criticised numerous inadequacies in Qantas' operational and training processes. On 25 July 2008, Qantas Flight 30, a Boeing 747–400 registered VH-OJK, suffered a ruptured fuselage and decompression as a result of an oxygen tank explosion over the South China Sea. En route from Hong Kong International Airport to Melbourne Airport, the aircraft made an emergency landing in the Philippines with no injuries. On 7 October 2008, an Airbus A330-300 registered VH-QPA, travelling from Singapore Changi Airport to Perth, Western Australia as Qantas Flight 72, suffered a rapid loss of altitude in two sudden uncommanded pitch down manoeuvres causing serious injuries while from Learmonth. The aircraft safely landed in Learmonth, with 14 people requiring transportation by air ambulance to Perth. Another 30 people also required hospital treatment, while an additional 30 people had injuries not requiring hospital treatment. Initial investigations identified an inertial reference system fault in the Number-1 Air Data Inertial Reference Unit as the likely origin of the event. On receiving false indication of a very high angle of attack, the flight control systems commanded a pitch down movement, reaching a maximum of 8.5 degrees pitch down. The incident featured in a 7 News documentary. On 4 November 2010, Qantas Flight 32, an Airbus A380 registered VH-OQA, fitted with four Rolls-Royce Trent 972 engines, suffered an uncontained turbine disc failure of its left inboard engine shortly after taking off from Singapore Changi Airport en route to Sydney. The aircraft returned to Singapore and landed safely. None of the 440 passengers or 29 crew on board were injured. Extortion attempts On 26 May 1971 Qantas received a call from a "Mr. Brown" claiming that there was a bomb planted on a Hong Kong-bound jet and demanding $500,000 in unmarked $20 notes. The caller and threat were taken seriously when he directed police to an airport locker where a functional bomb was found. Arrangements were made to pick up