Mooney M20J accident near Broomfield, Colorado, June 28, 1984
On June 28, 1984 at about 2:21 pm local time, a Mooney M20J, registered N3713H, was destroyed in an accident near Broomfield, Colorado. It was a business flight under general aviation rules (Part 91). 2 people were killed. 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
- June 28, 1984 · about 2:21 pm local time
- Place
- Broomfield, Colorado · map
- Type
- Accident
- Injuries
- 2 people were killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Mooney M20J · all M20Js on the register
- Registration
- N3713H · no longer on the register · serial 24-0910
- Damage
- Destroyed
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE AIRCRAFT HAD BEEN IDLE FOR 40 DAYS AND WAS REFUELED TO CAPACITY WITH 30 GALS THE NIGHT BEFORE THE FLIGHT. PLT AND PASS WERE DEPARTED AT 0819 FOR A SCHEDULED 0830 MEETING 150 MILES AWAY. ON INITIAL CLIMB, PLT REPORTED A POWER LOSS. ACFT OBSERVED TO DECELERATE IN A SHALLOW GLIDE, EXECUTE BRIEF TURNS IN BOTH DIRECTIONS, BEFORE THE STALL AND SPIN TO VERTICAL IMPACT. WATER AND SILIANCEOUS (SAND) PARTICLES WERE FOUND IN FUEL INJECTOR LINES, SERVO AND SCREEN.
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; instrument: airplane
- Flight time: 367 hours in all; 364 in this make and model; 4 in the last 90 days; 212 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 841 hours
- Last inspection: annual inspection, May 14, 1984; 82 hours since
- Maximum gross weight: 2,740 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming IO-360-A3B6D (piston); 0 hours total
The flight
- Departed from: Broomfield CO at 2:19 pm
- Destination: STK Sterling CO
- Flight plan: VFR
- Runway 0
Weather at the time
- Light: daylight
- Wind: at 5 knots
- Visibility: 50 statute miles
- Sky: clear
- Temperature: 73°F (23°C), dew point 45°F (7°C)
- Altimeter: 30.00 inHg
- Observation at 2:25 pm from BJC, 2 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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.
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.