AIRCRAFT ACCIDENT REPORT. NORTHWEST AIRLINES, INC., BOEING 727-251, N26 4US, NEAR THIELLS, NEW YORK. DECEMBER 1, 1974
About 1926 e.s.t. on December 1, 1974, Northwest Airlines Flight 6231, a Boeing 727-251, crashed about 3.2 nmi west of Thiells, New York. The accident occurred about 12 minutes after the flight had departed John F. Kennedy International Airport, Jamaica, New York, and while on a ferry flight to Buffalo, New York. Three crewmembers, the only persons aboard the aircraft, died in the crash. The aircraft was destroyed. The aircraft stalled at 24,800 feet m.s.l. and entered an uncontrolled spiralling descent into the ground. Throughout the stall and descent, the flightcrew did not recognize the actual condition of the aircraft and did not take the correct measures necessary to return the aircraft to level flight. Near 3,500 feet m.s.l., a large portion of the left horizontal stabilizer separated from the aircraft, which made control of the aircraft impossible. The National Transportation Safety Board determines that the probable cause of this accident was the loss of control of the aircraft because the flightcrew failed to recognize and correct the aircraft's high-angle-of-attack, low-speed stall and its descending spiral.
National Transportation Safety BoardOffice of Aviation Safety
Washington, DC United States 20594
- Publication Date: 1975-8-13
- Pagination: 32 p.
- TRT Terms: Air transportation crashes; Airborne navigational aids; Airspeed; Angle of attack; Civil aircraft; Crash investigation; Crash landing; Descent; Speed indicators; Stall
- Old TRIS Terms: Airspeed indicators; Flight instruments
- Subject Areas: Aviation; Safety and Human Factors;
- Accession Number: 00093353
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NTSB-AAR-75-B, File-1-0031
- Files: NTIS
- Created Date: Dec 16 1976 12:00AM