Japan's Ground Self-Defense Force has failed to determine the cause of engine trouble that resulted in one of its helicopter crashing in waters off the southern prefecture of Okinawa in April last year, Defense Ministry sources said Sunday.The outcome of the investigation is expected to be announced in the near future, along with measures to prevent a recurrence of any similar accident. April's crash resulted in the deaths of all 10 personnel on board.After analyzing the wreckage and the recovered flight recorder, the GSDF and collaborating companies detected that both engines saw a reducti…READ FULL ARTICLE
