Aircraft Accident/Incident Report

Afton, Wyoming 83110
Monday, September 18, 1989 1:30 MDT

NTSB Narrative Summary Released at Completion of Accident

AS THE NON-INSTRUMENT RATED PLT WAS RETURNING FROM A X-COUNTRY FLT AT NIGHT, THE ACFT CRASHED ON RISING TERRAIN. IMPACT OCCURRED AT AN ELEVATION OF ABOUT 10,300 FT, NEAR THE TOP OF A MTN RIDGE. NO PREIMPACT PART FAILURE OR MALFUNCTION WAS FOUND. AN INVESTIGATION REVEALED THERE WAS A FAST MOVING COLD FRONT IN THE AREA WITH TSTMS. ABOUT 30 MI SE AT ROCK SPRINGS, WY, THE WX WAS IN PART: 1300 FT BROKEN, 5 MI VIS WITH RAIN, WIND FM 280 DEG AT 17 GUSTING 22 KTS.

NTSB Probable Cause Narrative

THE NON-INSTRUMENT RATED PILOT'S CONTINUED FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC) AND HIS FAILURE TO MAINTAIN SUFFICIENT ALTITUDE TO CLEAR THE TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE: DARKNESS, ADVERSE WEATHER CONDITIONS, AND RISING/MOUNTAINOUS TERRAIN.

Event Information

Type of Event Accident
Event Date 9/18/1989
Event Day of the Week Monday
Time of Event 130
Event Time Zone Mountain Daylight Time
Event City AFTON
Event State WYOMING
Event Country --
Zipcode of the event site 83110
Event Date Year 1989
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2358 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 130
Weather Observation Facility ID RKS
Elevation of weather observation facility 6760
Distance of event from weather observation facility (units?) 30
Time Zone of the weather observation MDT
Lighting Conditions Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Unknown
Wind Speed (knots) 17
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 22
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 0
Intensity of Precipitation Heavy
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1386
NTSB Notification Source --
NTSB Notification Date Sep 19 1989 12:00AM
NTSB Notification Time 2240
Fiche Number and/or location -used to find docket information 39687
Date of most recent change to record Dec 13 2000 1:03PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N739XX
NTSB Number DEN89FA222
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 172N
Aircraft Series Identifier 172N
Aircraft Serial Number 17270899
Certified Max Gross Weight 2150
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Sep 1 1989 12:00AM
Airframe hours since last inspection 28
Airframe Hours 3275
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name FRANCE FLYING SERVICE, INC
Aircraft Owner Street Address P.O. BOX 606, RAWLINS MUNC.
Aircraft Owner City RAWLINS
Aircraft Owner State WY
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name FRANCE FLYING SERVICE, INC
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address PB 606
Operator City RAWLINS
Operator State WY
Operator Country
Operator Zip code 82301
Operator Code
Owner has at least one certificate None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code PIH
Departure City POCATELLO
Departure State ID
Departure Country
Departure Time 5
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code RWL
Destination City RAWLINS
Destination State WY
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --