Aircraft Accident/Incident Report

Koyukuk, Alaska 99754
Friday, January 2, 2004 16:30 AST

NTSB Narrative Summary Released at Completion of Accident

The Title 14, CFR Part 135 cargo flight departed for a destination airport about 20 miles downriver. Although weather at the departure airport was VFR, no reports of the actual weather along the route of flight were available. Unable to locate the destination airport due to deteriorating weather conditions, the pilot attempted to return to the departure airport following the river for ground reference. The airplane entered fog and whiteout weather conditions, and collided in-flight with the frozen surface of the river.

NTSB Probable Cause Narrative

The pilot's continued flight into adverse weather conditions, and his failure to maintain clearance from terrain, which resulted in an in-flight collision with terrain. Factors associated with the accident were fog and whiteout weather conditions.

Event Information

Type of Event Accident
Event Date 1/2/2004
Event Day of the Week Friday
Time of Event 1630
Event Time Zone Atlantic Standard Time
Event City Koyukuk
Event State ALASKA
Event Country --
Zipcode of the event site 99754
Event Date Year 2004
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 645234N
Event Location Longitude 1574338W
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 100
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Obscured
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 1
Air Temperature at event time (in degrees celsius) -29
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 15267
NTSB Notification Source FAA, Anchorage ROC
NTSB Notification Date Jan 2 2004 12:00AM
NTSB Notification Time 1800
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 28 2004 3:34PM
User who most recently changed record NTSB\MONR
Basic weather conditions Instrument Meteorological Cond
FAA District Office Fairbanks, FSDO-01

Aircraft Involved

Aircraft #1

Aircraft Registration Number N45008
NTSB Number ANC04LA018
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-31-350
Aircraft Series Identifier --
Aircraft Serial Number 31-8052167
Certified Max Gross Weight 7368
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 10
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Dec 26 2003 12:00AM
Airframe hours since last inspection 4006
Airframe Hours 12808
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name LARRYS FLYING SERVICE INC
Aircraft Owner Street Address 3822 University Ave. S.
Aircraft Owner City Fairbanks
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99709
Operator is an individual? No
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 FWRA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Cargo
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code PAGA
Departure City Galena
Departure State AK
Departure Country USA
Departure Time 1600
Departure Time Zone AST
Destination Same as Local Flt crash at destination city
Destination Airport Code KYU
Destination City Koyukuk
Destination State AK
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? Yes
Evacuation occurred No
Date of most recent change to record Mar 1 2004 12:18PM
User who most recently changed record PETL
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --