RELATIVES of the six Hong Kong people killed in an Aeroflot crash last year are taking advice on suing the manufacturer of the plane, Airbus Industrie. Bereaved families say they have just six months left in which to make a bid for legal compensation, and have asked aviation and legal experts for advice on the long-awaited English-language version of the accident report. The report on the ill-fated jet which crashed in Siberia last March, killing all 75 passengers, confirmed that the pilot's 15-year-old son had been at the controls when it plummeted. The captain reached the controls one minute before impact. The families are considering action against the manufacturer, instead of the airline, after the report revealed the lack of an instrument alarm system on the A310 jet had left the crew unaware the auto-pilot had been disengaged. Lawyer Hilda Chiu Wai-yee, who is helping the families prepare legal action, said its course was still being considered. 'We are investigating the possibility of suing the manufacturer,' she said. 'The final report contains a lot of technical things we are having experts look at. 'The report did contain some criticism of the lack of a warning system, some kind of buzzing that would have told them the auto-pilot was off.' The report concludes: 'The A310 plane crash occurred as a result of its getting in a stall and further passing into a spin and hitting the ground due to a combination of factors.' These included Captain Kudrinsky's decision to allow his son take the controls, and the auto-pilot's declutching going unnoticed. 'The availability on board the plane of an alarm system warning the crew of the auto-pilot declutching in conformity with Item 8273 of the Flying Worthiness Standards and international operation practice recommendations could have secured a timely auto-pilot declutching detection by the crew,' the report says. Pilot Bob Patrick said he would have expected visual and aural warnings if the auto-pilot became disengaged. 'I would have thought there would have been an aural and visual warning lasting about one to two seconds, one you physically have to disarm,' he said. A spokesman for Airbus in Hong Kong said he did not have information at hand to explain whether its craft were fitted with such alarms.