"Civil Aeronautics Board: Accident Investigation Report (File No. 1-0143)". United States Department of Transportation. Archived from the original on 19 January 2016. Retrieved 19 January 2016. نسخة محفوظة 04 مارس 2016 على موقع واي باك مشين.
"Civil Aeronautics Board: Accident Investigation Report (File No. 1-0143)". United States Department of Transportation. Archived from the original on 19 January 2016. Retrieved 19 January 2016. نسخة محفوظة 04 مارس 2016 على موقع واي باك مشين.