A lead French accident investigator probing the crash of an Air France jetliner says he is not optimistic that search efforts in the south Atlantic will produce the doomed plane's flight recorders.

调查法航班机坠毁事件的一位资深法国调查员说，他对于在南大西洋找到失事飞机飞行记录器的前景不乐观。

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An introduction is given to the importance and technical requirements of accident prevention design for air separation plant in petrochemical industries and some problems to be recognized.

介绍了石化企业空分装置安全防护的重要性，技术要求和应注意的问题。

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But Chesley Sullenberger is also an expert on air safety, including accident investigations, and even has his own consulting business.

VOA: special.2009.01.30

Mr.Netanyahu attended the funeral of an air force pilot who was killed in a training accident.

VOA: standard.2009.09.14

An earlier Air Accident Investigation Branch report said there was no evidence of mechanical failure with the aircraft.

BBC: Mark Weir inquest: Helicopter crash death 'accident'

"It's been 10 months since the last worst air accident in Brazilian history, and now we've had an accident worse than that, " said David Fleischer, a political scientist at the University of Brasilia.

NPR: Brazilian Prosecutors Seek to Close Airport After Crash

He served as an instructor and Air Line Pilots Association safety chairman, accident investigator and national technical committee member, according to a biography on the site.

CNN: Pilot praised for 'masterful' landing