Ultima Thule Lodge Airport
Aircraft Accident/Incident Report

Chitina, Alaska 99566
Sunday, October 18, 1998 14:00 AKD

NTSB Narrative Summary Released at Completion of Accident

The airplane was taking off when the engine quit at the departure end of the airstrip approximately 50 feet above the ground. The pilot landed straight ahead on a short gravel bar and nosed over into a river, with the carburetor remaining above water. The pilot said the front fuel tank was full, and selected. The fuel system remained intact. Disassembly of the engine revealed no mechanical, fuel system, or ignition system anomalies. No fuel was found in the main fuel supply line. A mix of water and fuel was found in the carburetor bowl.

NTSB Probable Cause Narrative

The pilot's inadequate preflight which failed to detect water contamination in the fuel system. A factor was the unsuitable terrain in the emergency landing area.

Event Information

Type of Event Accident
Event Date 10/18/1998
Event Day of the Week Sunday
Time of Event 1400
Event Time Zone --
Event City CHITINA
Event State ALASKA
Event Country --
Zipcode of the event site 99566
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 ULTIMA THULE LODGE
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 1
Degrees magnetic from airport --
Airport Elevation 1250
Weather Briefing Completeness Not pertinent
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 10000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 40
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 Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 6
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1381
NTSB Notification Source --
NTSB Notification Date Oct 18 1998 12:00AM
NTSB Notification Time 1650
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 N94DC
NTSB Number ANC99LA007
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name de Havilland
Aircraft Model DHC-2
Aircraft Series Identifier DHC-2
Aircraft Serial Number 51-16485
Certified Max Gross Weight 5100
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 100 Hour
Date of Last Inspection Sep 15 1998 12:00AM
Airframe hours since last inspection 75
Airframe Hours 9647
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name PAUL EDWARD CLAUS
Aircraft Owner Street Address PO BOX 109
Aircraft Owner City CHITINA
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99566
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 XUOC
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code
Departure City ULTIMA THULE
Departure State AK
Departure Country
Departure Time 1400
Departure Time Zone ADT
Destination Same as Local Flt crash at destination city
Destination Airport Code CXC
Destination City
Destination State AK
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 23 2001 1:54PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 8
Runway Length 1500
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --