Cessna U-206C accident near Iliamna, Alaska, October 20, 1984
On October 20, 1984 at about 1:00 am local time, a Cessna U-206C, registered N9577G, was substantially damaged in an accident near Iliamna, Alaska. It was a personal flight under general aviation rules (Part 91). 1 person was killed and 2 people were seriously injured. 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
- October 20, 1984 · about 1:00 am local time
- Place
- Iliamna, Alaska · map
- Type
- Accident
- Injuries
- 1 person was killed and 2 people were seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna U-206C · all U-206Cs on the register
- Registration
- N9577G · no longer on the register · serial U206-01777
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT DRAGGED A WING TIP & NOSED OVER WHILE LANDING ON A SMALL LAKE NEAR ILIAMNA, ALASKA. THE PASSENGER SEATED NEXT TO THE PIC STATED THAT THE PLT HAD CANCELLED HIS FLT PLAN PRIOR TO LANDING, CIRCLED THE LAKE & MADE A LONG FINAL APCH TO A TOUCHDOWN ON THE LAKE. THE PASSENGER FURTHER STATED THAT HE OBSERVED A X-WIND PRIOR TO TOUCHDOWN. APRX 3 TO 5 SECONDS AFTER TOUCHDOWN THE AIRPLANE ROLLED TO THE RT & THE RT WING TIP STRUCK THE WATER, VEERING THE ACFT TO THE RT & NOSING OVER IN 8 TO 10 FT OF WATER. THE PASSENGER STATED THAT AS THIS WAS OCCURRING, THE PIC, SHOUTED 'CROSSWIND' VERY SURPRISED. AN AUTOPSY SHOWED THE PLT DIED FROM DROWNING.
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
- Medical certificate: Class 3 (invalid medical for flight)
- Seat: left
The aircraft
- Airframe total time: 1,028 hours
- Last inspection: annual inspection, September 1, 1984
- Maximum gross weight: 3,600 lb
- Seats: 6
- Landing gear: fixed
- Engine: Continental IO-520-F (piston); 0 hours total
The flight
- Departed from: Z41 Anchorage AK at 5:15 pm
- Destination: ILI Iliamna AK
- Flight plan: VFR
- Runway 0
Weather at the time
- Light: daylight
- Wind: at 5 knots
- Visibility: 6 statute miles
- Sky: broken clouds at 1,100 ft; scat at 500 ft
- Temperature: 34°F (1°C), dew point 30°F (-1°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 2 |
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.