Cessna C-150M accident near Chakachamna, Alaska, May 16, 1990
On May 16, 1990 at about 4:00 am local time, a Cessna C-150M, registered N9477U, was substantially damaged in an accident near Chakachamna, Alaska. It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
PILOT-IN-COMMAND'S FAILURE TO PROPERLY SURVEY THE LANDING AREA AND ENSURE THE APPROPRIATE WIDTH FOR HIS AIRPLANE.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 16, 1990 · about 4:00 am local time
- Place
- Chakachamna, Alaska · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna C-150M
- Registration
- N9477U · registry record · serial 15078425
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT-IN-COMMAND LANDED ON A ROAD UNEVENTFULLY; HE THEN PERFORMED A HIGH SPEED TAXI TO A PARKING AREA AND DURING THE TAXI, BRUSH ON BOTH SIDES OF THE ROAD WAS STRIKING THE OUTER PORTIONS OF BOTH WINGS. THE BRUSH ON THE LEFT SIDE OF THE AIRPLANE STOPPED AND THE BRUSH ON THE RIGHT SIDE CAUSED THE AIRPLANE TO VEER TO THE RIGHT OFF THE ROAD.
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 multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 1,335 hours in all; 700 in this make and model; 166 in the last 90 days; 62 in the last 30 days; 1,198 as pilot in command; 450 on instruments
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 7,733 hours
- Last inspection: annual inspection, May 23, 1989; 33 hours since
- Maximum gross weight: 1,600 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental O-200-A (piston); 0 hours total
The flight
- Departed from: MRI Anchorage AK at 10:00 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 60 statute miles
- Sky: overcast at 4,000 ft; not recorded
- Temperature: 50°F (10°C), dew point 0°F (-18°C)
- Observation at 4:00 pm
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 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.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number ANC90LA089.