Mar 28, 2011
"A Four Corners investigation into last year's mid-air explosion of a Qantas A380 jet engine raises serious concerns about quality controls at Rolls-Royce.
It reveals the engine-maker was aware of a faulty weld on an oil pipe in one its Trent 900 engines a year before the explosion happened.
Despite the initial warning, the company went on to manufacture another faulty pipe.
The 2009 crack was caused by a sub-surface void which had been created in the welding process.
Three more oil pipes were found that were considered by regulators to fall outside the safety margin for thickness."
Rolls-Royce under scrutiny after Qantas explosion - ABC News (Australian Broadcasting Corporation)