Mattison MAC 300 accident near Brewster, Kansas, July 6, 1983
On July 6, 1983, a Mattison MAC 300 (ultralight), registered UNREG, was substantially damaged in an accident near Brewster, Kansas (Hutton 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
- July 6, 1983
- Place
- Brewster, Kansas · Hutton · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Mattison MAC 300
- 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
THE ULTRALIGHT WENT OUT OF CONTROL AND DOVE IN A COCKSCREW SPIRAL TO THE GROUND. THE VEHICLE DID NOT MOVE AFTER IMPACT. THE ACFT WAS AT ABOUT 200 FT AGL WHEN WITNESSES SAW IT DIP THE RIGHT WING AND START A SPIN WHICH WAS DESCRIBED AS A CORKSCREW. IT MADE 4 OR 5 REVOLUTIONS BEFORE HITTING THE GROUND. THE SHERIFF TOOK A PICTURE WHICH SHOWS THAT THE UPPER HINGE CLEVIS ON THE RUDDER POST IS NOT CONNECTED TO THE RUDDER SUPPORT POST. THE PIN IS IN THE SUPPORT POST CLEVIS. THE VEHICLE WAS HANGERED IN A SHED THAT REQUIRED THE RUDDER BE REMOVED TO HANGER IT. THE PILOT SAID HE INSTALLED THE RUDDER BEFORE THE ACCIDENT FLT.
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
- Ratings: single-engine land
- Flight time: 330 hours in all; 20 in this make and model; 20 in the last 90 days; 290 as pilot in command
- Medical certificate: Unknown
- Seat: ctr
The aircraft
- Airframe total time: 20 hours
- Last inspection: inspection type not recorded
- Maximum gross weight: 600 lb
- Seats: 1
- Landing gear: fixed
- Engine: Kawasaki TA340A-F202 (piston); 0 hours total
The flight
- Flight plan: none
- Runway 14, 4,000 ft by 200 ft
Weather at the time
- Light: daylight
- Wind: at 5 knots
- Visibility: 15 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 0°F (-18°C)
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.