Kotzebue Airport
Aircraft Accident/Incident Report

Kotzebue, Alaska 99752
Monday, August 13, 2001 10:49 AKD

NTSB Narrative Summary Released at Completion of Accident

The certificated private pilot, with one passenger, was departing southbound from an airport under special VFR conditions. Witnesses reported that weather conditions to the south, and specifically in the direction of accident site, were momentarily much worse than that being reported at the airport. About two minutes after takeoff, the airplane collided with a 335 feet tall commerical radio antenna tower. The tower was situated about 395 feet above sea level, and located 4.3 nautical miles south of the departure airport. The tower was installed in 1986, and was depicted as an obstruction on the VFR aviation sectional map covering the area around the departure airport. The tower was painted in an alternating aviation orange/aviation white pattern. Two sets of red light fixtures were installed about the 110 and 220 feet levels. Each set of lights had two lamps. A large flashing red light fixture was installed at the top of the tower. One of the two light fixture lamps, located on the lower portion of the tower, was not operating, and was scheduled for replacement. However, the second light fixture lamp located at that this position was still operating. A light sensitive switch (photocell), was installed that would automatically turn the tower lights "ON" when the surrounding ambient light decreased, and would turn the tower lights "OFF" when ambient light increased. At the time of the accident, the lights were configured so that they were in the "ON" position 24 hours per day. The accident took place during daylight hours. The antenna complied with the governing FCC's rules and regulations regarding marking and lighting of antennas, as well as the FAA's obstruction standards.

NTSB Probable Cause Narrative

The pilot's failure to maintain adequate clearance from an obstruction (antenna tower), and his continued flight into instrument meteorological conditions. Factors associated with the accident were low ceilings, and low visibility.

Event Information

Type of Event Accident
Event Date 8/13/2001
Event Day of the Week Monday
Time of Event 1049
Event Time Zone --
Event City Kotzebue
Event State ALASKA
Event Country --
Zipcode of the event site 99752
Event Date Year 2001
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 665000N
Event Location Longitude 1623300W
Event Location Airport Kotzebue
Event Location Nearest Airport ID OTZ
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 4.3
Degrees magnetic from airport 180
Airport Elevation 11
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1041 Atlantic Daylight Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID OTZ
Elevation of weather observation facility 11
Distance of event from weather observation facility (units?) 4
Time Zone of the weather observation ADT
Lighting Conditions Day
Lowest Ceiling Height 900
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2.5
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.91
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 12543
NTSB Notification Source ANC FAA, ROC
NTSB Notification Date Aug 13 2001 12:00AM
NTSB Notification Time 1208
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jan 16 2003 4:27PM
User who most recently changed record NTSB\MONR
Basic weather conditions Instrument Meteorological Cond
FAA District Office Fairbanks FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N56467
NTSB Number ANC01FA106
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? Yes
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Maule
Aircraft Model M-6-235
Aircraft Series Identifier --
Aircraft Serial Number 7414C
Certified Max Gross Weight 2500
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 4
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 Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Arctic Camps And Equipment
Aircraft Owner Street Address 9312 Vanguard Drive Suite # 200
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99507
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 --
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 No
Departure Point Same as Event No
Departure Airport Code OTZ
Departure City Kotzebue
Departure State AK
Departure Country USA
Departure Time 1848
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code DEE
Destination City Deering
Destination State AK
Destination Country USA
Specific Phase of Flight Cruise
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Sep 23 2002 5:46PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --