The rupture of an oxygen cylinder on board a Qantas Boeing 747 was a unique event and highly unlikely to happen again according to the Australian Transport Safety Bureau (ATSB).
On 25 July 2008, an oxygen cylinder ruptured in the plane's forward cargo hold about an hour into a flight from Hong Kong to Melbourne. Part of the ruptured cylinder punctured the fuselage wall and damaged the cabin, causing the plane to rapidly depressurise. The plane then made an emergency descent and landed at the nearest suitable airport in Manila, Philippines. None of the 369 passengers and crew on board were…