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EASA issues emergency AD on Trent engines following Qantas A380 engine failure
11 November 2010

The European Aviation Safety Agency (EASA) issued an Emergency Airworthiness Directive (AD) for Rolls Royce RB211 Trent 900 series engines following a recent incident involving  such an engine on a Qantas A380.

The incident happened on November 4, 2010 when engine nr 2. on a Qantas Airbus A380, VH-OQA, suffered an uncontained failure shortly after takeoff from Singapore.

Analysis of the preliminary elements from the incident investigation shows that an oil fire in the HP/IP structure cavity may have caused the failure of the Intermediate Pressure Turbine (IPT) Disc.

This condition, if not detected, could ultimately result in uncontained engine failure potentially leading to damage to the aeroplane and hazards to persons or property on the ground.

For these reasons and pending conclusion of the incident investigation, the AD requires repetitive inspections of the Low Pressure Turbine (LPT) stage 1 blades and case drain, HP/IP structure air buffer cavity and oil service tubes in order to detect any abnormal oil leakage, and if any discrepancy is found, to prohibit further engine operation.


Note: This emergency AD was superseded by a EAD 2010-0242-E on November 22:  http://www.caa.co.uk/docs/33/easa_ad_2010_0242_E.pdf


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