Amateur-built QUICKSILVER MX accident near Thousand Oaks, California, August 4, 1984
On August 4, 1984 at about 6:05 pm local time, a amateur-built QUICKSILVER MX (ultralight), registered UNREG, was substantially damaged in an accident near Thousand Oaks, California (Private Strip airport). It was a personal flight under ultralight rules (Part 103). 1 person was 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
- August 4, 1984 · about 6:05 pm local time
- Place
- Thousand Oaks, California · Private Strip · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built QUICKSILVER MX QUICKSILVE
- Registration
- UNREG · no longer on the register
- Damage
- Substantial damage
- Flight
- Personal flight · ultralight rules (Part 103)
The NTSB's narrative final · quoted from the NTSB record
DURING A TAKEOFF CLIMB, THE ULTRALIGHT COLLIDED WITH A POWER LINE & CRASHED. THE PLT STATED THAT HE DID NOT SEE THE WIRES UNTIL IMPACT; NOR WAS HE AWARE OF THEIR PRESENCE.
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
- Flight time: 200 hours in all; 140 in this make and model; 12 in the last 90 days; 5 in the last 30 days; 200 as pilot in command
- Medical certificate: Unknown
- Seat: ctr
The aircraft
- Airframe total time: 180 hours
- Last inspection: annual inspection, November 10, 1983
- Seats: 1
- Landing gear: fixed
- Engine: Cuyuna 430R (piston); 0 hours total
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 270° at 10 knots
- Visibility: 4 statute miles
- Sky: scat at 1,500 ft
- Temperature: 73°F (23°C), dew point 0°F (-18°C)
- Observation at 5:45 pm from OXR, 15 miles away
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.