Naughty Tiger - ATSB Report 6000 Hour A320 fault
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Naughty Tiger - ATSB Report 6000 Hour A320 fault
Tiger cops a smack over the wrist from CASA/ATSB for not reporting fault.
A/c involved was 2 year old A320 with 6000 hours Total Time
ABSTRACT -
"On 18 May 2009, an Airbus Industrie A320-232 aircraft, registered VH-VNC was on a regular public transport flight from Mackay, Queensland (Qld) to Melbourne, Victoria when at about 1249 Eastern Standard Time, the aircraft started to vibrate. Cockpit indications showed that the left aileron was oscillating. The crew diverted the aircraft to the Gold Coast Aerodrome, Qld and landed.
The source of the aileron oscillation was an internal fault in one of the left aileron's hydraulic servos. The fault was introduced during manufacture by an incorrect adjustment of the servo, which caused internal wear in a number of the servo's hydraulic control components. The aileron servo manufacturer has incorporated a new method of adjusting the aileron servos during assembly to minimise the likelihood of a recurrence of the problem.
During the investigation, it was found that an identical fault had occurred to the same aircraft 8 months prior to this incident. The previous incident was not reported to the Australian Transport Safety Bureau by the operator as required by the Transport Safety Investigation Act 2003. The operator has improved the training of its staff and the reportable event requirements in its safety management system manual in an effort to address the non-reporting risk."
Download final report [PDF: 964KB] <a href="http://www.atsb.gov.au/media/1580506/ao2009021.pdf"
A/c involved was 2 year old A320 with 6000 hours Total Time
ABSTRACT -
"On 18 May 2009, an Airbus Industrie A320-232 aircraft, registered VH-VNC was on a regular public transport flight from Mackay, Queensland (Qld) to Melbourne, Victoria when at about 1249 Eastern Standard Time, the aircraft started to vibrate. Cockpit indications showed that the left aileron was oscillating. The crew diverted the aircraft to the Gold Coast Aerodrome, Qld and landed.
The source of the aileron oscillation was an internal fault in one of the left aileron's hydraulic servos. The fault was introduced during manufacture by an incorrect adjustment of the servo, which caused internal wear in a number of the servo's hydraulic control components. The aileron servo manufacturer has incorporated a new method of adjusting the aileron servos during assembly to minimise the likelihood of a recurrence of the problem.
During the investigation, it was found that an identical fault had occurred to the same aircraft 8 months prior to this incident. The previous incident was not reported to the Australian Transport Safety Bureau by the operator as required by the Transport Safety Investigation Act 2003. The operator has improved the training of its staff and the reportable event requirements in its safety management system manual in an effort to address the non-reporting risk."
Download final report [PDF: 964KB] <a href="http://www.atsb.gov.au/media/1580506/ao2009021.pdf"
Last edited by 1a sound asleep; 24th Aug 2010 at 01:05.
I've read quite a few ATSB reports and it is normal not to name the operator. I believe this is a legal issue. And probably a good thing to. The database is a public website, and to name operators especially in preliminary reports where all the facts are not known is asking for the media to compromise the investigation/reputation of the operator.