Beech C23 accident near Longmont, Colorado, August 23, 1983
On August 23, 1983 at about 9:00 pm local time, a Beech C23, registered N6004V, was substantially damaged in an accident near Longmont, Colorado (Longmont Municipal airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 2 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
- August 23, 1983 · about 9:00 pm local time
- Place
- Longmont, Colorado · Longmont Municipal · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Beech C23 · all C23s on the register
- Registration
- N6004V · registry record · serial M2123
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE STUDENT PLT, A FOREIGN NATIONAL, AND THE INSTRUCTOR PLT (CFI) TOOK OFF FROM BROOMFIELD, CO & FLEW TO LONGMONT, CO WHERE THEY BEGAN PRACTICING TOUCH & GO LANDINGS. AFTER THE 3RD TOUCH & GO LANDING, THE ACFT WAS CLIMBING AT ABOUT 300 FT AGL WHEN THE STUDENT TURNED OFF THE ELECTRIC FUEL BOOST PUMP. IMMEDIATELY THEREAFTER, THE ENG LOST POWER. THE CFI TURN BOOST PUMP BACK ON, BUT BY THEN, THE FUEL PRESSURE WAS READING ZERO. THE CFI TOOK CONTROL OF THE ACFT & SWITCHED FUEL TANKS, BUT WAS UNABLE TO RESTART THE ENG. SUBSEQUENTLY, HE LANDED IN A CORN FIELD. DURING THE LANDING, THE ACFT HIT AN IRRIGATION DITCH, WHICH WAS HIDDEN FROM VIEW BY THE CORN STALKS, AND THE NOSE & RIGHT MAIN GEAR COLLAPSED. THE FUEL SELECTOR WAS FOUND POSITIONED TO THE LEFT FUEL TANK WHICH HAD RUPTURED DURING IMPACT. THE RIGHT TANK WAS NOT DAMAGED & WAS FOUND TO BE EMPTY.
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: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instrument: airplane
- Flight time: 738 hours in all; 12 in this make and model; 135 in the last 90 days; 538 as pilot in command
- Medical certificate: Class 1 (valid medical--w/ waivers/lim.)
- Seat: rgt
The aircraft
- Airframe total time: 2,195 hours
- Last inspection: 100-hour inspection, November 11, 1982
- Maximum gross weight: 2,450 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-360-A4K (piston); 0 hours total
The flight
- Departed from: BJC Broomfield CO
- Flight plan: none
- Runway 11, 4,200 ft by 60 ft
Weather at the time
- Light: daylight
- Wind: from 270° at 5 knots
- Visibility: 20 statute miles
- Sky: clear
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 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.