On 2 October 1998, the TSB initiated a heavy lift operation to retrieve the major portion of the wreckage from the deep water before the expected winter storms began. By 21 October, an estimated 27% of the wreckage was recovered. At that point in the investigation, the crash was generally believed to have been caused by faulty wiring in the cockpit after the IFE system started to overheat. The TSB released its preliminary report on 30 August 2000 and the final report in 2003.