Piper PA-18-150 accident near Tok, Alaska, August 15, 1988
On August 15, 1988 at about 11:46 pm local time, a Piper PA-18-150, registered N6893B, was substantially damaged in an accident near Tok, Alaska. It was a flight of an unrecorded kind under charter and air-taxi rules (Part 135). 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 November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 15, 1988 · about 11:46 pm local time · cases in 1988
- Place
- Tok, Alaska · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-18-150 · all PA-18-150s on the register
- Registration
- N6893B · no longer on the register · serial 185083
- Damage
- Substantial damage
- Flight
- Flight of an unrecorded kind · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
DURING THE TAKEOFF ROLL ON A GRAVEL BAR, THE PILOT LOST DIRECTIONAL CONTROL OF THE AIRPLANE & IT BOUNCED INTO THE RIVER. THE AIRPLANE THEN NOSED OVER ON ITS BACK. THE PILOT AND PASSENGER BOTH EXITED THE AIRPLANE.
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: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instrument: airplane
- Flight time: 2,300 hours in all; 700 in this make and model; 2,240 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: frt
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 1,800 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-320 (piston); 0 hours total
The flight
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 060° at 10 knots
- Visibility: 40 statute miles
- Sky: scat at 18,000 ft
- Temperature: 66°F (19°C), dew point 46°F (8°C)
- Altimeter: 30.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
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.
Other NTSB records under N6893B the same tail number, which may have belonged to a different aircraft at the time
Connections how this case links to the rest of the register
- N6893B: not on the register today · the record of its deregistration
- Piper PA-18 Super Cub 3,620 registered today · the model family and its accident history
- Piper 44,840 aircraft on the register
- Engine: Lycoming O-320 27,303 aircraft carry this series today · as the NTSB recorded it
- Accidents and incidents in Alaska 5,932 since 1982 · 825 in the last ten years
- Alaska 9,142 aircraft registered
- Other NTSB records under N6893B 2 records · the number may have belonged to another aircraft at the time
The whole map of how records connect · these connections as data: /graph/accident/ANC88LA110.json.
The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.
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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.