Oxygen bottle 'caused in-flight Qantas explosion'

Air safety investigators said the “sudden and complete release” of a pressurised oxygen bottle caused the explosion that blew a hole in the fuselage of a Qantas jet last month, forcing an emergency landing in the Philippines capital, Manila.

Julian Walsh, acting executive director of the Australian Transport Safety Bureau, released an interim report today into the investigation of the emergency that occurred over the South China Sea on July 5.

Mr Walsh said one of the seven emergency oxygen cylinders below the cabin floor had exploded. He did not say why.

“On the basis of the physical damage to the aircraft’s forward cargo hold and cabin, it is evident that the number 4 passenger oxygen cylinder sustained a failure that allowed a sudden and complete release of the pressurised contents,” Mr Walsh told reporters.

The Boeing 747-438 aircraft, carrying 365 people, immediately lost cabin pressure after the explosion blew a hole 60 inches long in the fuselage.

The plane – en route from London to Melbourne, Australia – rapidly descended thousands of feet and flew to Manila, 295 miles away.

No one was injured in the incident, but questions were raised about the much-lauded safety of Qantas Airways, which has never lost a jet aircraft because of an accident.