Cosmos Phase II accident near Deer Park, Washington, July 10, 2002
On July 10, 2002 at about 3:30 am local time, a Cosmos Phase II, an amateur-built aircraft,, registered UNREG, was substantially damaged in an accident near Deer Park, Washington (Deer Park airport). It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
Loss of control for undetermined reasons.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 10, 2002 · about 3:30 am local time
- Place
- Deer Park, Washington · Deer Park · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Cosmos Phase II, amateur-built · all Phase IIs on the register
- Registration
- UNREG · no longer on the register
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The non-certified pilot was operating an unregistered experimental Cosmos Phase II Trike. A witness to the accident reported that the aircraft entered a left turn shortly after departing the runway. He reported that the aircraft reached an altitude of approximately 200 feet above ground level (AGL) and then began to descend. The aircraft continued a descending left turn until it impacted terrain. The witness reported that this was the pilot's first solo flight in the accident aircraft. During a telephone interview, the pilot reported that he was unable to recall any of the detailed events surrounding the accident.
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
- Flight time: 35 hours in all; 35 in this make and model
- Injury: serious injuries
The aircraft
- Maximum gross weight: 900 lb
- Seats: 2
- Landing gear: fixed
- Engine: Rotax 503 DC (piston); 0 hours total
The flight
- Departed from: DEW Deer Park WA at 3:30 am
- Flight plan: none
- Runway 14, 2,400 ft by 80 ft
Weather at the time
- Light: daylight
- Wind: from 020° at 7 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 75°F (24°C), dew point 55°F (13°C)
- Altimeter: 29.82 inHg
- Observation at 3:53 am from KDEW
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.
Other NTSB records under UNREG the same tail number, which may have belonged to a different aircraft at the time
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.