KUALA LUMPUR: The Fire and Rescue Department is conducting an internal investigation into the crash of one of its helicopters near the Sultan Abdul Aziz Shah Airport in Subang.It said that it will take appropriate action in line with proper procedure based on the internal investigation." At the same time, the Air Accident Investigation Bureau is also conducting its own investigation to uncover the cause of the crash," the department said in a statement on Sunday( July 23). According to the incid