Aircraft Accident/Incident Report

Aniak, Alaska 99557
Monday, October 26, 1998 17:35 AST

NTSB Narrative Summary Released at Completion of Accident

The certificated commercial pilot and two passengers departed a remote airport on an air taxi flight. After takeoff, the pilot climbed the airplane to about 1,000 feet msl. The engine began to run rough. Emergency engine procedures did not remedy the roughness. The airplane began losing altitude, and the pilot selected a forced landing area in a slough. The airplane collided with trees, and received damage to the wings, fuselage, and empennage. A sample of fuel from the left reservoir tank was murky and silty, and contained a small amount of water. Laboratory analysis of the fuel sample revealed the fuel met the standards for aviation fuel. Contamination in the fuel sample consisted of silt and dust, microscopic fibers, and paint chips. After recovery, examination of the engine did not find any mechanical malfunction. The engine produced full power on a test stand.

NTSB Probable Cause Narrative

A loss of engine power due to fuel contamination. A factor in the accident was unsuitable terrain for a forced landing.

Event Information

Type of Event Accident
Event Date 10/26/1998
Event Day of the Week Monday
Time of Event 1735
Event Time Zone Atlantic Standard Time
Event City ANIAK
Event State ALASKA
Event Country --
Zipcode of the event site 99557
Event Date Year 1998
Event Date Month 10
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1900 Atlantic Standard Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID ANI
Elevation of weather observation facility 88
Distance of event from weather observation facility (units?) 3
Time Zone of the weather observation AST
Lighting Conditions Dusk
Lowest Ceiling Height 1700
Lowest Non-Ceiling Height 100
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) 2.5
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 112
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 3
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 1383
NTSB Notification Source --
NTSB Notification Date Oct 26 1998 12:00AM
NTSB Notification Time 1944
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Feb 23 2001 1:54PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N73533
NTSB Number ANC99LA009
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 207A
Aircraft Series Identifier 207A
Aircraft Serial Number 20700602
Certified Max Gross Weight 3800
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 7
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Oct 4 1998 12:00AM
Airframe hours since last inspection 67
Airframe Hours 106127
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name ARCTIC AIR GROUP
Aircraft Owner Street Address P.O. BOX 190228
Aircraft Owner City ANCHORAGE
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99519
Operator is an individual? --
Operator Name ARCTIC CIRCLE AIR INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 60049
Operator City FAIRBANKS
Operator State AK
Operator Country
Operator Zip code 99706
Operator Code ACSA
Owner has at least one certificate Yes - certificate holder
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 Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code ANI
Departure City
Departure State
Departure Country
Departure Time 1732
Departure Time Zone AST
Destination Same as Local Flt --
Destination Airport Code KLG
Destination City KALSKAG
Destination State AK
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 20 2002 12:42PM
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 --