Detailní rozbor nehody motoru u A380 (Qantas, 4. listopad 2010)

02.06.2011

Na serveru avherald.com vyšel velmi detailní rozbor nehody motoru A380 australského Qantasu (4. listopad 2010). Není v našich silách článek přeložit, proto se předem omlouváme všem, kteří si sami s překladem neporadí. Pro vysokou zajímavost článku přikládáme alespoň část + odkaz na zdroj.

The ATSB reported in an interim report that the European Aviation Safety Agency (EASA) held a meeting attended by Australia's Civil Aviation Safety Authority (CASA), Rolls Royce, ATSB, United Kingdom's AAIB and the BEA to discuss in the light of the significant damage resulting from this event, whether the engine as well as the airframe actually met design certification criteria. EASA and CASA agreed after receiving technical documentation from Airbus and Rolls Royce that the design certification criteria were met, however further investigation into the aircraft's structure and systems as well as the engine's behaviour is to be performed to establish, if there are safety issues needing to be addressed.

Hasiči po dosednutí hasí motor tuhým hasivem

Further analysis of the fracture surface on the misaligned oil pipe bore progressed and the ATSB developed a better understanding of the failure mechanism. These data as well as other evidence showed that the initial area of fatigue cracking (as identified in the images of the preliminary report) are not the area of interest but the adjacent area on the counter bore.

The ATSB said that due to lack of measurement records of the oil feed pipes Rolls Royce could not establish whether the oil feed pipes had been manufactured to specification. A subsequent risk assessment concluded that the standard oil feed pipes should be removed from service on all fleetwide engines.

Measurement records were also not available for two other oil feed pipe modules, on wing inspections of these modules found 7 modules with wall thicknesses less than required leading to the engines being replaced. 3 more engines were removed from service after evaluating their manufacturing measurement records.

The ATSB said: "The ATSB, in conjunction with the UK AAIB and Rolls-Royce, is examining the circumstances and missed opportunities with the potential to have detected the reduced wall thickness and offset counter bore of the oil feed pipe prior to, during and after the manufacture of the module 51 assemblies. The ATSB is also reviewing the quality audits undertaken of, and the quality assurance system affecting, the module 51 design and manufacturing process and their effectiveness in detecting deficiencies in that process."

Simulator tests based on the data derived from the flight data recorder aimed to assess the workload by the crew showed that the airplane remained in normal control law which kept the airplane within prescribed safety envelope.

The ATSB anticipates that the fact finding part of the investigation will conclude by July 2011, the analysis of the data and the compilation of the final report is anticipated to conclude by May 2012.

Článek obsahuje i zajímavé mapy, mimo jiné například místa nálezu jednotlivých částí motoru

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    Kontrolní kód : Kontrolní kód

Odpovědět

Datum : 03.06.2011 20:14, Vložil : Jakub

A jó, upraveno :)

Šotek?

Odpovědět

Datum : 03.06.2011 17:29, Vložil : J

"Hasiči po dosednutí hasí motor tuhým palivem" - to to hasí briketama? :)

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