Joslin Field Airport
Aircraft Accident/Incident Report

Murtaugh, Idaho 83344
Saturday, December 6, 1986 19:00 MST

NTSB Narrative Summary Released at Completion of Accident

DURING THE TRANSITION FROM A DME ARC TO THE ILS FINAL APCH COURSE, THE PLT ALLOWED THE ACFT TO PREMATURELY DESCEND INTO THE GROUND. THE REASON FOR THE DESCENT COULD NOT BE DETERMINED. HOWEVER, NO PRE-IMPACT MECHANICAL MALFUNCTION WITH THE ACFT WAS FOUND NOR WAS THERE ANY EVIDENCE SUPPORTING PLT INCAPACITATION. DARK NIGHT CONDITIONS IN FOG AND LOW CEILINGS PREVAILED DURING THE APCH.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/6/1986
Event Day of the Week Saturday
Time of Event 1900
Event Time Zone Mountain Standard Time
Event City MURTAUGH
Event State IDAHO
Event Country --
Zipcode of the event site 83344
Event Date Year 1986
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport JOSLIN FIELD
Event Location Nearest Airport ID TWF
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 4151
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1909 Mountain Standard Time
Direction of event from weather observation facility (degrees) 253
Weather Observation Facility ID TWF
Elevation of weather observation facility 4151
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation MST
Lighting Conditions Night/Dark
Lowest Ceiling Height 400
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Partial Obscuration
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 4
Air Temperature at event time (in degrees celsius) 0
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 5
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 Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious 2
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 2062
NTSB Notification Source --
NTSB Notification Date Dec 6 1986 12:00AM
NTSB Notification Time 1825
Fiche Number and/or location -used to find docket information 32596
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N37561
NTSB Number SEA87LA020
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 414A
Aircraft Series Identifier 414A
Aircraft Serial Number 414A0007
Certified Max Gross Weight 6350
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 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 19 1985 12:00AM
Airframe hours since last inspection 120
Airframe Hours 1487
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name PAUL C. VAN ALSTYNE
Aircraft Owner Street Address 21901 SADDLE PEAK
Aircraft Owner City TOPANGA
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 90290
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 VNY
Departure City VAN NUYS
Departure State CA
Departure Country
Departure Time 1400
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code SUN
Destination City SUN VALLEY
Destination State ID
Destination Country
Specific Phase of Flight Approach
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 25
Runway Length 8703
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --