Aircraft Accident/Incident Report

Bettles, Alaska 99726
Sunday, April 17, 1983 15:00 AST

NTSB Narrative Summary Released at Completion of Accident

ACCORDING TO WITNESSES, THE ACFT WAS SEEN FLYING ALONG THE TRANS ALASKA PIPELINE AT AN ESTIMATED ALT OF 200 FT AGL. AS THE ACFT ENTERED A PASS, WHERE THE PIPELINE CROSSED RISING TERRAIN, A WITNESS HEARD THE ACFT'S ENG POWER INCREASE, THEN THE PLANE DISAPPEARED FROM HIS VIEW IN FALLING SNOW. SHORTLY THEREAFTER, HE COULD NO LONGER HEAR THE ENG & ASSUMED THE ACFT HAD MADE IT THRU THE PASS. LATER, THE ACFT WAS FOUND BY A PIPELINE HELICOPTER PLT WHERE IT HAD CRASHED AT THE 4700 LEVEL OF THE PASS. THE PIPELINE PLT REPORTED THE VISIBILITY WAS 1/2 MI IN SNOW & THE CEILING WAS 100 FT OBSCURED AT THE HIGHEST POINT IN THE PASS. WITNESSES AT THE BASE OF THE PASS ESTIMATED THE CEILING WAS 100 TO 200 FT, THE VISIBILITY WAS 1/2 TO 1 MI & LIGHT TO MODERATE SNOW WAS FALLING. THE CRASH SITE WAS LOCATED JUST BEYOND THE POINT WHERE THE PIPELINE TRANSITIONED FROM AN ABOVE GROUND INSTALLATION TO A BELOW GROUND INSTALLATION. NO EVIDENCE OF A PREIMPACT MALFUNCTION WAS FOUND.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/17/1983
Event Day of the Week Sunday
Time of Event 1500
Event Time Zone Atlantic Standard Time
Event City BETTLES
Event State ALASKA
Event Country --
Zipcode of the event site 99726
Event Date Year 1983
Event Date Month 4
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 --
Weather Briefing Completeness Partial - limited by pilot
Investigator's weather source Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 200
Lowest Non-Ceiling Height 200
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Obscured
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) -4
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Moderate
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 2642
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 22945
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 N4060W
NTSB Number ANC83FA071
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-32-300
Aircraft Series Identifier PA-32-300
Aircraft Serial Number 32-40089
Certified Max Gross Weight 3400
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 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name STEVE'S CONSTRUCTION CO. INC.
Aircraft Owner Street Address 2646 SECCUSION DRIVE
Aircraft Owner City ANCHORAGE
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99504
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 FAI
Departure City FAIRBANKS
Departure State AK
Departure Country
Departure Time 1325
Departure Time Zone AST
Destination Same as Local Flt --
Destination Airport Code SCC
Destination City DEADHORSE
Destination State AK
Destination Country
Specific Phase of Flight Climb
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --