Cessna 310 accident near Butte, Montana, June 15, 2020
On June 15, 2020 at about 6:30 pm local time, a 1975 Cessna 310, registered N87395, was substantially damaged in an accident during landing near Butte, Montana (Bert Mooney airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot's failure to maintain clearance from a fence post during final approach which resulted in a damage to the left main landing gear, and its subsequent collapse during landing.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 15, 2020 · about 6:30 pm local time
- Place
- Butte, Montana · Bert Mooney · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 310 R, built 1975 · all 310s on the register
- Registration
- N87395 · no longer on the register · serial 310R0543
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
While on final approach to land, about 150 ft above the ground, the pilot maneuvered and descended the airplane away from a bird. The pilot then realized that he was on a lower approach path to the runway after he observed an airport perimeter fence, but felt that he could still perform a safe landing and increased engine power to continue the approach. The airplane’s left main landing gear then struck a fence post and the pilot initiated a go-around to return to the departure airport. After unsuccessful attempts to verify the left main landing gear was extended and locked, he initiated a landing with full flaps and in a right-wing low attitude. As the airplane touched down, the left main landing gear collapsed, the airplane veered left, exited the runway, and the left wing struck a runway sign. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
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
What happened, in order
- Landing gear collapse during landing defining event
- Runway excursion during landing
- Collision with terrain or object (not controlled flight into terrain) during landing
The NTSB's findings
- cause Personnel issues › Psychological › Attention/monitoring › Monitoring environment › Pilot
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Descent/approach/glide path › Not attained/maintained
- Environmental issues › Physical environment › Object/animal/substance › Pole › Effect on operation
- Aircraft › Aircraft systems › Landing gear system › Main landing gear › Damaged/degraded
Pilot
- Certificate: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Medical certificate: Class 2 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 5,501 lb
- Seats: 6
- Landing gear: retractable
- Engine 1: Continental IO 520 SERIES (piston); 0 hours total
- Engine 2: Continental IO 520 SERIES (piston); 0 hours total
- Operator: Angle Of Attack Aeronautics LLC
The flight
- Departed from: 7S1 Twin Bridges MT at 3:00 pm
- Destination: BTM Butte MT
- Flight plan: not recorded
- Runway 33, 9,000 ft by 150 ft
Weather at the time
- Light: daylight
- Wind: at 4 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 55°F (13°C), dew point 27°F (-3°C)
- Altimeter: 30.02 inHg
- Observation at 5:53 pm from KBTM, 1 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
3 documents, released by the NTSB on September 10, 2020. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Record of Conversation-pilot | PDF, 1 page | View Download |
| 2 | Pilot Statement | PDF, 3 pages | View Download |
| 3 | Accident Photo | PDF, 1 page | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
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.