Lake LA-250 accident near Sisters, Oregon, September 29, 1991
On September 29, 1991 at about 7:26 pm local time, a Lake LA-250, registered N1404X, was destroyed in an accident near Sisters, Oregon (Sisters Eagle Air airport). It was a personal flight under general aviation rules (Part 91). 3 people were killed and 1 person was seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
IMPROPER PLANNING/DECISION BY THE PILOT(S), AND FAILURE TO ATTAIN SUFFICIENT ALTITUDE TO REMAIN CLEAR OF OBSTRUCTIONS. FACTORS RELATED TO THE ACCIDENT WERE: THE PILOT(S) FAILURE TO USE ALL AVAILABLE RUNWAY, HIGH DENSITY ALTITUDE, RISING TERRAIN AND TREES BEYOND THE DEPARTURE END OF THE RUNWAY, AND LACK OF FAMILIARITY WITH THE GEOGRAPHICAL AREA.
Source: NTSB aviation accident database, copy made October 12, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 29, 1991 · about 7:26 pm local time · cases in 1991
- Place
- Sisters, Oregon · Sisters Eagle Air · cases near this airport · map
- Type
- Accident
- Injuries
- 3 people were killed and 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Lake LA-250
- Registration
- N1404X · no longer on the register · serial 44
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
WITNESSES RPRTD THE PLTS HAD DIFFICULTY LOCATING THE ARPT. AFTER LNDG, THEY ELECTED TO TAKEOFF ON RWY 2, TOWARD TREES & RISING TRRN. ABT 17 MI EAST AT REDMAN, OR, THE 1215 WX WAS, IN PART: SKY CLEAR, VIS 10 MI, WIND FM 030 DEG AT 4 KTS. AT SISTERS, OR, THE DENSITY ALT WAS ABT 5500 FT. WITNESSES NOTED THAT DRG TAKEOFF, THE ACFT WAS TAXIED ONTO THE APCH END OF THE RWY, THEN TAXIED DOWN THE RWY ABT 100 FT BEFORE STARTING A ROLLING TAKEOFF. THERE WERE INDCNS THAT THE ACFT WOULD NOT CLR A RIDGE BEYOND THE DEP END OF THE RWY. THE ACFT ENTERED A STEEP LEFT TURN. SUBSEQUENTLY, IT STRUCK TREES ABT 50 FT AGL & CRASHED. WITNESSES RPRTD THE ENG WAS RUNNING AT HI POWER UNTIL IMPACT. ALSO, WITNESSES RPRTD THAT PILOTS, WHO WERE FAMILIAR WITH THE ARPT, FAVORED RWY 20 DRG CALM OR LIGHT WINDS.
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: 217 hours in all; 111 in this make and model; 53 in the last 90 days; 19 in the last 30 days; 121 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 326 hours
- Last inspection: annual inspection, March 6, 1991; 121 hours since
- Maximum gross weight: 3,140 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming IO-540-C4B5 (piston); 0 hours total
The flight
- Destination: HIO Hillsboro OR
- Flight plan: VFR
- Runway 2, 3,550 ft by 50 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 030° at 4 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 77°F (25°C), dew point 39°F (4°C)
- Altimeter: 30.00 inHg
- Observation at 7:15 pm from RDM, 17 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 2 | |||
| Passengers | 1 | 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.
Connections how this case links to the rest of the register
- N1404X: not on the register today · the record of its deregistration
- Lake 137 aircraft on the register
- Engine: Lycoming IO-540-C4B5 179 aircraft carry this series today · as the NTSB recorded it
- Sisters Eagle Air Airport · nearest airport
- Portland-Hillsboro Airport · bound for
- Accidents and incidents in Oregon 1,862 since 1982 · 277 in the last ten years
- Oregon 7,013 aircraft registered
The whole map of how records connect · these connections as data: /graph/accident/SEA91FA255.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.