Wednesday, June 6, 2012

Gulfstream G650, Gulfstream Aerospace, N652GD: Accident occurred April 02, 2011 in Roswell, New Mexico

NTSB Identification: DCA11MA076
14 CFR Part 91: General Aviation
Accident occurred Saturday, April 02, 2011 in Roswell, NM
Probable Cause Approval Date: 09/24/2013
Aircraft: GULFSTREAM GVI, registration: N652GD
Injuries: 4 Fatal.

NTSB investigators traveled in support of this investigation and used data obtained from various sources to prepare this aircraft accident report.

The Safety Board’s full report is available at http://www.ntsb.gov/investigations/reports_aviation.html. The Aircraft Accident Report number is NTSB/AAR-12-02.

On April 2, 2011, about 0934 mountain daylight time, an experimental Gulfstream Aerospace Corporation GVI (G650), N652GD, crashed during takeoff from runway 21 at Roswell International Air Center Airport, Roswell, New Mexico. The two pilots and the two flight test engineers were fatally injured, and the airplane was substantially damaged by impact forces and a postcrash fire. The airplane was registered to and operated by Gulfstream as part of its G650 flight test program. The flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed at the time of the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
an aerodynamic stall and subsequent uncommanded roll during a one engine-inoperative takeoff flight test, which were the result of (1) Gulfstream’s failure to properly develop and validate takeoff speeds for the flight tests and recognize and correct the takeoff safety speed (V2) error during previous G650 flight tests, (2) the G650 flight test team’s persistent and increasingly aggressive attempts to achieve V2 speeds that were erroneously low, and (3) Gulfstream’s inadequate investigation of previous G650 uncommanded roll events, which indicated that the company’s estimated stall angle of attack while the airplane was in ground effect was too high. Contributing to the accident was Gulfstream’s failure to effectively manage the G650 flight test program by pursuing an aggressive program schedule without ensuring that the roles and responsibilities of team members had been appropriately defined and implemented, engineering processes had received sufficient technical planning and oversight, potential hazards had been fully identified, and appropriate risk controls had been implemented and were functioning as intended.

The Safety Board’s full report is available at http://www.ntsb.gov/investigations/reports_aviation.html. The Aircraft Accident Report number is NTSB/AAR-12-02.

On April 2, 2011, about 0934 mountain daylight time, an experimental Gulfstream Aerospace Corporation GVI (G650), N652GD, crashed during takeoff from runway 21 at Roswell International Air Center Airport, Roswell, New Mexico. The two pilots and the two flight test engineers were fatally injured, and the airplane was substantially damaged by impact forces and a postcrash fire. The airplane was registered to and operated by Gulfstream as part of its G650 flight test program. The flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed at the time of the accident.

NTSB Identification: DCA11MA076 
14 CFR Part 91: General Aviation
Accident occurred Saturday, April 02, 2011 in Roswell, NM
Aircraft: GULFSTREAM GVI, registration: N652GD
Injuries: 4 Fatal.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators traveled in support of this investigation and used data obtained from various sources to prepare this aircraft accident report.

On April 2, 2011, about 0934 mountain daylight time, a Gulfstream GVI (G650) airplane, N652GD, was substantially damaged after impact with terrain during takeoff at Roswell International Air Center Airport (ROW), Roswell, New Mexico. Visual meteorological conditions prevailed and a company flight plan was filed for the 14 Code of Federal Regulations Part 91 flight. The two flight crewmembers and the two technical crewmembers were fatally injured. The flight had originated from ROW about 0700 for a local area flight.

The airplane was operating under a Federal Aviation Administration (FAA) Experimental Certificate of Airworthiness and was performing a take off with a simulated engine failure to determine take-off distance requirements at minimum flap setting.

Wingtip scrape marks beginning on the runway approximately 5,300 feet from the end of the runway lead toward the final resting spot about 3,800 feet from the first marks on the runway. Witnesses close to the scene saw the airplane sliding on the ground with sparks and smoke coming from the bottom of the wing, and described the airplane being fully involved in fire while still moving across the ground. The airplane struck several obstructions and came to rest upright about 200 feet from the base of the airport control tower. Several airport rescue and fire fighting (ARFF) units responded quickly and fought the fire.


SAVANNAH, Ga. — Gulfstream Aerospace released a report of their findings on the crash of a Gulfstream G650 test flight in April of 2011.

Four Gulfstream employees lost their lives when the plane went down over New Mexico.

The report includes a probable cause of the crash and safety recommendations to prevent future accidents.

An excerpt from the report states that, “Gulfstream accepts full responsibility for the accident.”

The report was submitted to the National Transportation Safety Board. The NTSB is still investigating the crash and their final report isn’t expected until this fall.

Gulfstream released a report on the crash of a Gulfstream G650 test flight in April of last year

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