NTSB Identification: DEN84FA047.
The docket is stored on NTSB microfiche number 23329.
Nonscheduled 14 CFR
Accident occurred Thursday, December 22, 1983 in ROCK SPRINGS, WY
Aircraft: PIPER 602P, registration: N6894P
Injuries: 2 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT SWERVED OFF THE SNOW-COVERED RWY DURING LANDING. THE SNOW PLOW EQUIPMENT OPERATOR WAS UNABLE TO KEEP THE RWY CLEAR DUE TO STRONG WINDS. FINGER DRIFTS DEVELOPED SOON AFTER EACH PLOWING. TWO FOOT SNOW BANKS EXISTED ON EITHER SIDE OF THE RWY. THE SNOW BANK ON THE LEFT SIDE BORE EVIDENCE OF WHEEL MARKS WHERE THE ACFT CROSSED THROUGH, PARRALLED THE RWY AND RE-ENTERED THE RUNWAY. THE ACFT CAME TO REST ABOUT HALF WAY DOWN THE RWY. THE PLT SAID THAT HE FELT THE THE LEFT GEAR HIT A DRIFT, THE ACFT SWERVED AND THE LANDING GEAR COLLAPSED. THE NIGHT WAS DARK AND THE WEATHER WAS INDEFINITE CEILING 400 FT SKY OBSCURED, VISIBILITY 1 1/4 MILES IN LIGHT SNOW AND FOG.

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

DIRECTIONAL CONTROL..NOT POSSIBLE..PILOT IN COMMAND

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

GROUND LOOP/SWERVE..UNCONTROLLED..PILOT IN COMMAND

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

AIRPORT SNOW REMOVAL..NOT POSSIBLE..AIRPORT PERSONNEL


Contributing Factors

AIRPORT FACILITIES,RUNWAY/LANDING AREA CONDITION..SNOWBANK


Contributing Factors

LANDING GEAR,MAIN GEAR..OVERLOAD


Contributing Factors

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


Contributing Factors

LANDING GEAR,NOSE GEAR ASSEMBLY..OVERLOAD


Contributing Factors

LIGHT CONDITION..DARK NIGHT


Contributing Factors

WEATHER CONDITION..FOG


Contributing Factors

WEATHER CONDITION..SNOW


Contributing Factors

WEATHER CONDITION..LOW CEILING

Index for Dec1983 | Index of months