NTSB Identification: CEN09CA156
14 CFR Public Use
Accident occurred Friday, December 05, 2008 in Grand Forks, ND
Probable Cause Approval Date: 07/28/2009
Aircraft: ROCKWELL INTERNATIONAL 500-S, registration: N51RF
Injuries: 2 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The twin-engine airplane was being operated by the National Oceanic and Atmospheric Administration conducting snow survey flights. The airplane initially departed from the Grand Forks International Airport (GFK), Grand Forks, North Dakota, and made a refueling stop at the Fargo International Airport, Fargo, North Dakota. The airplane was on a repositioning flight back to GFK when the accident occurred. During the flight, the airplane was cleared by air traffic control for the runway 17R localizer backcourse approach to GFK. The airplane landed on runway 17R with the landing gear in the retracted position, resulting in substantial damage to the airplane. Subsequently, the engines were shut down and the aircraft was evacuated. The minimum descent altitude and visibility requirements for the approach were 1,200 feet above mean sea level (msl) and 1 mile respectively. The ceiling and visibility at the time of the accident were 800 feet (about 1,650 feet msl) and 1 mile respectively. The operator noted that there were no mechanical malfunctions.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to extend the landing gear prior to touchdown.

Full narrative available

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