Watchdogs have probed FIVE 'incidents' involving planes at fatal crash flying school

Planes owned by a firm involved in a crash which killed a teenager and his flying instructor had been the subject of at least five previous investigations by watchdogs.

MarketNews 仅展示媒体发布的标题和摘要，全文请在出版方网站阅读。 (www.dailymail.com)