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Accidents · NTSB ANC87LA159 · Preliminary: the investigation is not finished

Piper PA-18 accident near Skwentna, Alaska, September 15, 1987

On September 15, 1987 at about 7:30 pm local time, a Piper PA-18, registered N4370A, was substantially damaged in an accident near Skwentna, Alaska. It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 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
September 15, 1987 · about 7:30 pm local time
Place
Skwentna, Alaska · map
Type
Accident
Injuries
No one was hurt; 2 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Piper PA-18 · all PA-18s on the register
Registration
N4370A · registry record · serial 184772
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE ENGINE STOPPED PRODUCING POWER BUT CONTINUED TO WINDMILL. THE PILOT WAS ABLE TO GLIDE TO A GRAVEL BAR AND INTENTIONALLY GROUNDLOOPED TO AVOID HITTING OBSTRUCTIONS. THE PILOT STATED HE BELIEVED THE AIRCRAFT RAN OUT OF FUEL.

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: private
  • Ratings: single-engine land; single-engine sea
  • Flight time: 9,000 hours in all; 2,500 in this make and model; 2 in the last 90 days; 2 in the last 30 days; 8,900 as pilot in command
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: frt

The aircraft

  • Airframe total time: 3,200 hours
  • Last inspection: annual inspection, September 18, 1986; 86 hours since
  • Maximum gross weight: 1,750 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Lycoming O-320 (piston); 0 hours total

The flight

  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 40 statute miles
  • Sky: clear
  • Temperature: 46°F (8°C), dew point 45°F (7°C)
  • Altimeter: 29.00 inHg

Injuries

FatalSeriousMinorNone
Crew1
Passengers1

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.