Preliminary Report 001/2015(PDF) (Report). Qatar Civil Aviation Authority. December 7, 2015. Archived from the original(PDF) on February 13, 2017. Retrieved March 14, 2017.
Preliminary Report 001/2015(PDF) (Report). Qatar Civil Aviation Authority. December 7, 2015. Archived from the original(PDF) on February 13, 2017. Retrieved March 14, 2017.