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Accidents · NTSB ANC86LA120 · Preliminary: the investigation is not finished

Navion D-16 accident near Kotzebue, Alaska, August 5, 1986

On August 5, 1986 at about 3:30 am local time, a Navion D-16, registered N50TA, was substantially damaged in an accident near Kotzebue, Alaska (Kotzebue airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 3 people were on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
August 5, 1986 · about 3:30 am local time
Place
Kotzebue, Alaska · Kotzebue · map
Type
Accident
Injuries
No one was hurt; 3 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Navion D-16
Registration
N50TA · registry record · serial TTN16
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

THE LEFT FUEL VALVE WAS IN THE OFF POSITION AT THE TIME OF THE TAKEOFF. THE PILOT ATTEMPTED TO LIFT-OFF BELOW THE RECOMMENDED VMC SPEED. THE PILOT LOST CONTROL OF THE AIRCRAFT CAUSING THE AIRCRAFT TO EXIT THE LEFT SIDE OF THE RUNWAY INTO A LAKE.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

Pilot

  • Certificate: commercial pilot
  • Ratings: multi-engine land; single-engine land; instrument: airplane; rotorcraft: helicopter
  • Flight time: 7,003 hours in all; 50 in this make and model; 3 in the last 90 days; 3 in the last 30 days; 6,664 as pilot in command
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: rgt

The aircraft

  • Airframe total time: 2,000 hours
  • Last inspection: annual inspection, February 1, 1986
  • Maximum gross weight: 2,950 lb
  • Seats: 4
  • Landing gear: retractable
  • Engine: Lycoming O-320 (piston); 0 hours total

The flight

  • Destination: WTK Noatak AK
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 140° at 9 knots
  • Visibility: 30 statute miles
  • Sky: broken clouds at 10,000 ft; scat at 3,000 ft
  • Temperature: 57°F (14°C), dew point 46°F (8°C)
  • Altimeter: 29.00 inHg
  • Observation at 10:30 pm from OTZ

Injuries

FatalSeriousMinorNone
Crew1
Passengers2

Documents from the investigation the NTSB's docket: the evidence folder behind the report

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.