Fri, Dec 03, 2010
Procedure To Be Carried Out Within Two Flight Cycles
Australia's Civil Aviation Safety Authority (CASA) has issued a
directive to Qantas to conduct a further inspection of the
Rolls-Royce Trent 900 engines on its A380 aircraft. This direction
requires Qantas to inspect an oil filler tube that feeds oil to the
engine's high pressure/intermediate pressure bearing structure. The
oil filler tube inspection must be carried out within two flight
cycles.
Under the direction, Qantas is required to conduct the
inspections in accordance with detailed technical information
contained in a service bulletin issued by the manufacturer
Rolls-Royce this week. Inspections will be undertaken using
specialist equipment known as a borescope, which is inserted into
the oil tube and provides a view of the condition of the wall of
the tube.
CASA says Qantas engineers will be looking for any sign of the
wall of the tube being out of tolerance and reduced in thickness,
which could cause the tube to crack and leak oil. Evidence of a
problem with the oil tube has been found during the investigation
into the Qantas A380 engine failure near Singapore on 4 November
2010.
File Photo
The Australian Transport Safety Bureau has identified the
condition of the tube as a safety issue and issued a safety
recommendation to Rolls-Royce.
CASA says it continues to liaise closely with Qantas, the
European Aviation Safety Agency, Rolls-Royce, Airbus and the
Australian Transport Safety Bureau. In monitoring developments CASA
will take any further action that may be necessary in the interests
of safety.
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