Watch full size video:

The release of the interim declaration by Julian Walsh, acting executive director of the Australian Transport Safety Bureau, confirmed earlier suspicions by means of investigators that the tank was the attempt.

“We don’t really know why the bottle failed — and that’s the key motion in quest of the investigation,” Walsh told reporters in releasing the common fame. He said the exploration desire likely continue for months.

The Boeing 747-438 aircraft, carrying 365 people, was flying over the South China Sea July 25 when the explosion blew a hollow in the fuselage 79 inches expanded and 60 inches high, the report said.

Walsh said one of the seven emergency oxygen cylinders below the cabin floor had exploded.

The 26-pound steel cylinder, pressurized to 1,850 pounds through square inch, “sustained a failure that allowed a quick and complete release of the pressurized contents,” Walsh said.

Most of the cylinder rocketed up through the cabin floor, shearing off any emergency exit door handle and narrowly missing a crew seat before striking the cabin roof. It ricocheted back down end the den it created in the cabin floor, the report said.

Walsh said the cylinder had undergone a safety inspection shortly before it was installed in the jet and six weeks before it exploded.

The plane — en road from London to Melbourne, Australia — rapidly descended thousands of feet with the destruction of cabin character impressed and flew about 300 miles to Manila, where it made a successful emergency debarking.

No one was injured, but questions were raised about the much-lauded safety of Qantas Airways, which has none forfeited a jet aircraft because of each accident.

In the weeks in the pattern of the incident, Qantas planes experienced a number of other problems, including a loss of hydraulic fuel that led to an emergency landing-place, wild-goose chase of landing gear, and detached panels.

The problems prompted the Civil Aviation Safety Authority, Australia’s aviation agency, to launch a review of Qantas Airways’ safety standards.

Qantas Airways backed the bureau’s findings.

“The precursory report was a factual account of the incident and investigation to date,” Qantas corypheus executive Geoff Dixon said in the statement. “Our own investigations agree with the ATSB’s preliminary conclusions.”

Qantas earlier this month temporarily pulled six planes from service for the reason that of irregularities in maintenance records. Qantas said it was a record-keeping issue and in that place were no safety implications for the aircraft.