Cessna 425 accident near Boulder, Colorado, September 19, 1985
On September 19, 1985 at about 11:00 pm local time, a Cessna 425, registered N1222B, was substantially damaged in an accident near Boulder, Colorado (Boulder Municipal airport). It was a business flight under general aviation rules (Part 91). No one was hurt; 3 people were on board or involved. 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
- September 19, 1985 · about 11:00 pm local time
- Place
- Boulder, Colorado · Boulder Municipal · map
- Type
- Accident
- Injuries
- No one was hurt; 3 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 425 · all 425s on the register
- Registration
- N1222B · registry record · serial 425-0060
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PLT SAID HE MADE A NORMAL LDG. DURING LDG ROLL THE LEFT BRAKE WOULD NOT RESPOND TO PEDAL APPLICATION. THE PLT ERRORED BY INCORRECTLY FEATHERING BOTH PROPS. THE A/C WENT OFF THE ENG OF R/W AND STRUCK A FENCE. EXAMINATION OF THE BRAKE SYSTEM REVEALED A BRAKE PUCK WAS MISSING. A MISSING PUCK WOULD CAUSE POOR BRAKING ACTION.
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: multi-engine land; multi-engine sea; single-engine land; single-engine sea; instrument: airplane
- Flight time: 4,345 hours in all; 716 in this make and model; 91 in the last 90 days; 5 in the last 30 days; 4,255 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 916 hours
- Last inspection: annual inspection, September 17, 1985; 8 hours since
- Maximum gross weight: 6,800 lb
- Seats: 12
- Landing gear: retractable
- Engine: P&W TT6A-112A (turboprop); 0 hours total
The flight
- Departed from: BJC Denver CO at 10:55 pm
- Destination: 1V5 Boulder CO
- Flight plan: none
- Runway 0, 4,100 ft by 75 ft
Weather at the time
- Light: daylight
- Wind: from 270° at 5 knots
- Visibility: 60 statute miles
- Sky: scat at 8,000 ft
- Temperature: 73°F (23°C), dew point 0°F (-18°C)
- Altimeter: 30.00 inHg
- Observation at 4:45 pm from BJC
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 2 |
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.
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.