Aircraft Accident/Incident Report

Murphy, Idaho 83650
Tuesady, May 14, 1985 6:36 MDT

NTSB Narrative Summary Released at Completion of Accident

PLT RECEIVED A PREFLIGHT WX BRIEF INDICATING A RECENT FRONTAL PASSAGE IN THE AREA WITH STRONG WINDS AND TRUBULENCE ASSOCIATED WITH THUNDERSHOWERS ALONG THE INITIAL ROUTE OF FLIGHT UNTIL CLEAR OF THE OWYHEE MOUNTAINS. NO FLT PLAN WAS FILED. RADAR TRACKED THE ACFT TARGET SOUTH INTO THE MOUNTAINS WHERE IT DISAPPEARED. ANALYSIS OF RADAR DATA SHOWS THE TARGET CIRCLING BEFORE DISAPPEARING. WITNESSES AT BOISE, IDAHO AIRPORT STATED OWYHEE MOUNTAINS, NORMALLY VISIBLE FROM THE ARPT, WERE OBSCURED BY CLOUDS AT THE TIME OF OCCURRENCE. RELATIVES INDICATED A BUSINESS MEETING WAS SCHEDULED FOR THAT MORNING AT DESTINATION. INVESTIGATION SHOWED ACFT IMPACTED TERRAIN IN DESCENDING LEFT TURN AT A HIGH RATE OF SPEED.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 5/14/1985
Event Day of the Week Tuesday
Time of Event 636
Event Time Zone Mountain Daylight Time
Event City MURPHY
Event State IDAHO
Event Country --
Zipcode of the event site 83650
Event Date Year 1985
Event Date Month 5
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 Partial - limited by pilot
Investigator's weather source Weather Observation Facility
Time of the weather observation 700 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 340
Weather Observation Facility ID BOI
Elevation of weather observation facility 2858
Distance of event from weather observation facility (units?) 40
Time Zone of the weather observation MDT
Lighting Conditions Dawn
Lowest Ceiling Height 4000
Lowest Non-Ceiling Height 1000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 310
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) 30
Density Altitude (feet) --
Intensity of Precipitation Light
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) 798
NTSB Notification Source --
NTSB Notification Date May 17 1985 12:00AM
NTSB Notification Time 1900
Fiche Number and/or location -used to find docket information 28020
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1815Q
NTSB Number SEA85FA113
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 177RG0215
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 Aug 1 1984 12:00AM
Airframe hours since last inspection 48
Airframe Hours 2038
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name R.L. STIMPSON
Aircraft Owner Street Address 4440 B, RT. 4
Aircraft Owner City NAMPA
Aircraft Owner State ID
Aircraft Owner Country
Aircraft Owner Zipcode 83651
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code S67
Departure City NAMPA
Departure State ID
Departure Country
Departure Time 610
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code 307
Destination City HOLLISTER
Destination State CA
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 --