Rock Springs Airport
Aircraft Accident/Incident Report

Rock Springs, Wyoming 82902
Thursday, December 22, 1983 18:27 MST

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/22/1983
Event Day of the Week Thursday
Time of Event 1827
Event Time Zone Mountain Standard Time
Event City ROCK SPRINGS
Event State WYOMING
Event Country --
Zipcode of the event site 82902
Event Date Year 1983
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport ROCK SPRINGS
Event Location Nearest Airport ID RKS
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 6747
Weather Briefing Completeness Full
Investigator's weather source Pilot
Time of the weather observation 1830 Mountain Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID RKS
Elevation of weather observation facility 6760
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MST
Lighting Conditions Night/Dark
Lowest Ceiling Height 400
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 125
Air Temperature at event time (in degrees celsius) -15
Dew Point at event time (in degress fahrenheit) -10
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 3992
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 3013
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 23329
Date of most recent change to record Jan 2 2001 9:16AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6894P
NTSB Number DEN84FA047
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed VFR/IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model 602P
Aircraft Series Identifier 602P
Aircraft Serial Number 62P090781650
Certified Max Gross Weight 6000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 5
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 10 1983 12:00AM
Airframe hours since last inspection 62
Airframe Hours 389
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name SKY HARBOR AIR SERVICES, INC.
Aircraft Owner Street Address P.O. BOX 2165
Aircraft Owner City CHEYENNE
Aircraft Owner State WY
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code JAC
Departure City JACKSON
Departure State WY
Departure Country
Departure Time 1726
Departure Time Zone MST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 27
Runway Length 10000
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --