Vor Lake Waterlane Seaplane Airport
Aircraft Accident/Incident Report

Bettles, Alaska 99726
Sunday, July 11, 2004 13:15 AKD

NTSB Narrative Summary Released at Completion of Accident

During the initial climb after takeoff the float-equipped airplane encountered a downdraft and was unable to climb. Rising terrain and trees necessitated a downwind turn. During the turn, the airplane continued to descend, and the airplane impacted swampy terrain adjacent to the floatplane base. The pilot attributed the downdraft to either the large wildfire-induced cumulus clouds 1/2 mile east of the airport, or the winds gusting over rising terrain from the southwest.

NTSB Probable Cause Narrative

The pilot's inadequate compensation for the wind conditions during takeoff/initial climb, which resulted in a loss of control and in-flight collision with terrain. Factors contributing to the accident were the pilot's inadequate weather evaluation, and a downdraft.

Event Information

Type of Event Accident
Event Date 7/11/2004
Event Day of the Week Sunday
Time of Event 1315
Event Time Zone --
Event City Bettles
Event State ALASKA
Event Country --
Zipcode of the event site 99726
Event Date Year 2004
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 665455N
Event Location Longitude 1513141W
Event Location Airport VOR Lake Waterlane Seaplane
Event Location Nearest Airport ID 2A4
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Unknown
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 --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 16439
NTSB Notification Source FAA Anchorag, ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 28 2004 10:11AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N888FF
NTSB Number ANC04CA076
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion --
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 180J
Aircraft Series Identifier --
Aircraft Serial Number 18052669
Certified Max Gross Weight --
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 --
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Rhomas Bass
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State --
Aircraft Owner Country --
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name Thomas Bass
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Bellevue
Operator State WA
Operator Country USA
Operator Zip code --
Operator Code --
Owner has at least one certificate None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board --
Departure Point Same as Event Yes
Departure Airport Code PABT
Departure City Bettles
Departure State AK
Departure Country USA
Departure Time --
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code PASC
Destination City Deadhorse
Destination State AK
Destination Country USA
Specific Phase of Flight Descent - uncontrolled
Report sent to ICAO? No
Evacuation occurred --
Date of most recent change to record Sep 2 2004 1:18PM
User who most recently changed record PETL
Since inspection or accident --
Event Location Runway Number and Location 14W
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --