Cessna 185 accident near Chickaloon, Alaska, June 9, 1998
On June 9, 1998 at about 8:00 pm local time, a Cessna 185, registered N9855X, was substantially damaged in an accident near Chickaloon, 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).
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The NTSB's probable cause their words, unchanged
The pilot's inadvertent activation of the fuel boost pump selector switch during final approach, which resulted in an overly rich mixture and subsequent loss of engine power.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 9, 1998 · about 8:00 pm local time
- Place
- Chickaloon, Alaska · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 185 · all 185s on the register
- Registration
- N9855X · registry record · serial 185-0055
- 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
The pilot was landing at an elevation of 6900 feet msl on the Matanuska Glacier. He said that while on short final for landing, the engine lost power. Attempts to restore engine power were unsuccessful, and the airplane landed hard, about 500 feet short of the intended touch down point. The airplane's fuselage sustained substantial damage. He said that after landing and while securing the cockpit controls, he discovered that the fuel boost pump switch was placed in the 'high boost' position. The Cessna Pilot's Operating Handbook, stated, in part: 'If the engine-driven fuel pump switch is placed in the ON position, a fuel/air ratio considerably richer than best power is produced unless the mixture is leaned.'
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: single-engine land; single-engine sea; instrument: airplane
- Flight time: 1,105 hours in all; 250 in this make and model; 63 in the last 90 days; 40 in the last 30 days
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 10,146 hours
- Last inspection: approved inspection programme, June 8, 1998; 3 hours since
- Maximum gross weight: 3,200 lb
- Seats: 6
- Landing gear: fixed
- Engine: Continental IO-520D-24 (piston); 0 hours total
- Operator: Hudson Air Service, INC.
The flight
- Departed from: TKA Talkeetna AK at 10:15 am
- Flight plan: VFR
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 50 statute miles
- Sky: clear
- Temperature: 36°F (2°C), dew point 0°F (-18°C)
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 N9855X the same tail number, which may have belonged to a different aircraft at the time
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 ANC98LA067.