Aircraft Accident/Incident Report

Afton, Wyoming 83110
Thursday, December 10, 1987 9:30 MST

NTSB Narrative Summary Released at Completion of Accident

THE ACFT WAS NOT CERTIFIED NOR EQUIPPED FOR FLT INTO ICING CONDITIONS. THE PLT ELECTED TO DEPART EVEN THOUGH HE WAS ADVISED BY THE CREW OF A C-182 THAT HAD JUST LNDD TO STAY BELOW THE CLOUDS BECAUSE OF ICING. AFTER TKOF THE ACFT CLEARED AN 11000 FT MTN RANGE BUT COLLIDED WITH THE NEXT RANGE WHILE IN A WINGS LEVEL DESCENT AT 9200 FT. THE ACFT WAS NOT FOUND UNTIL JUNE 14, 1988. RECORDS AT THE NATIONAL WEATHER SERVICE INDICATE THAT THE WEATHER IN THE AREA OF THE ACCD AT THE TIME WAS OVERCAST SKIES WITH SNOW AND MODERATE ICING IN THE CLOUDS.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/10/1987
Event Day of the Week Thursday
Time of Event 930
Event Time Zone Mountain Standard Time
Event City AFTON
Event State WYOMING
Event Country --
Zipcode of the event site 83110
Event Date Year 1987
Event Date Month 12
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 Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 853 Mountain Standard Time
Direction of event from weather observation facility (degrees) 160
Weather Observation Facility ID RKS
Elevation of weather observation facility 6747
Distance of event from weather observation facility (units?) 120
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 4000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 60
Air Temperature at event time (in degrees celsius) 6
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 14
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 7000
Intensity of Precipitation Unknown
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) 2349
NTSB Notification Source --
NTSB Notification Date Jun 14 1988 12:00AM
NTSB Notification Time 1430
Fiche Number and/or location -used to find docket information 34871
Date of most recent change to record Dec 13 2000 3:03PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1868Q
NTSB Number DEN88FA128
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 177RG
Aircraft Series Identifier 177RG
Aircraft Serial Number 177RG0268
Certified Max Gross Weight 2800
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 Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 6 1986 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name KINGSLEY C. ROCK, JR.
Aircraft Owner Street Address 6013 SOUTH ADAMS
Aircraft Owner City LITTLETON
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 80121
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 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 AFO
Departure City AFTON
Departure State WY
Departure Country
Departure Time 930
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code APA
Destination City ENGLEWOOD
Destination State CO
Destination Country
Specific Phase of Flight Descent
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 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --