NTSB Identification: DEN85LA041.
The docket is stored on NTSB microfiche number 26116.
Accident occurred Thursday, December 13, 1984 in CORTEZ, CO
Aircraft: GULFSTREAM AEROCOMMANDER 695, registration: N980DW
Injuries: 7 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ACCIDENT ACFT WAS THE FIRST TO USE THE RWY SINCE IT WAS SCRAPED BY THE SNOW PLOW EARLIER IN THE DAY. A COMMERCIAL PLT THAT OPERATES AT THE ARPT SAID ABOUT 2-3 INCHES OF SNOW HAD ACCUMULATED ON THE RWY SINCE IT WAS CLEARED. THE PLT OF THE ACCIDENT ACFT SAID HE BACK-TAXIED ON THE RWY FOR TAKEOFF. HE BELIEVES ONE OF THE TIRES GOT IN A TAXI-MADE RUT AND THE OTHER WAS IN THE SLUSH FOR TAKEOFF. AT ABOUT 80 KTS IAS DURING TAKEOFF ROLL THE ACFT SUDDENLY VEERED TO THE RIGHT ACCORDING TO THE PLT. THE POWER WAS NORMAL SO SLUSH DRAG WAS ASSUMED TO BE THE CAUSE. THE PLT SAID THAT BEFORE CORRECTIVE ACTION COULD TAKE EFFECT THE ACFT COLLIDED WITH A SNOW BANK. A COMMERCIAL ACFT OPERATOR AT THE ARPT SAID THATHE DROVE ALONG THE TRACKS MADE BY THE ACFT IMMEDIATELY AFTER THE ACCIDENT. HE SAID IT APPEARED TO HIM THAT THE SNOW TRACKS DEPARTED THE CENTER OF THE RWY FOR QUITE A WAYS BEFORE HITTING THE SNOWBANK.

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

DIRECTIONAL CONTROL..NOT MAINTAINED..PILOT IN COMMAND

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

INATTENTIVE..PILOT IN COMMAND

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

GROUND LOOP/SWERVE..NOT CORRECTED..PILOT IN COMMAND

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

REMEDIAL ACTION..DELAYED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..SNOWBANK


Contributing Factors

AIRPORT FACILITIES,RUNWAY/LANDING AREA CONDITION..SNOW COVERED


Contributing Factors

LANDING GEAR,MAIN GEAR ATTACHMENT..OVERLOAD


Contributing Factors

VISUAL/AURAL PERCEPTION..PILOT IN COMMAND

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