Amateur-built DHC-7-100 incident near Denver, Colorado, July 29, 1984
On July 29, 1984 at about 9:58 am local time, a amateur-built DHC-7-100, registered N9058P, suffered minor damage in an incident near Denver, Colorado. It was a ferry flight under general aviation rules (Part 91). No one was hurt; 6 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 incident. 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 29, 1984 · about 9:58 am local time
- Place
- Denver, Colorado · map
- Type
- Incident
- Injuries
- No one was hurt; 6 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built DHC-7-100
- Registration
- N9058P · no longer on the register
- Damage
- Minor damage
- Flight
- Ferry flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE LEFT MAIN LANDING GEAR WAS DISASSEMBLED & REASSEMBLED BY COMPANY MAINTENANCE PERSONNEL & THE ACFT WAS BEING FERRIED TO ANOTHER BASE FOR PERMANENT LANDING GEAR REPAIRS. DURING TAKEOFF, THE LEFT MAIN LANDING GEAR AND SHOCK STRUT SEPERATED FROM THE ACFT. THE PLT MADE AN EMERG LANDING WITHOUT THE LEFT MAIN GEAR WHEELS. AN EXAM OF THE GEAR REVEALED THAT THE UPPER BEARING HALVES & PISTON DAMPING RING WERE INSTALLED USING THE MAINTENANCE MANUAL. REVIEW OF THE MAINTENANCE MANUAL REVEALED THAT THE LANDING GEAR ASSEMBLY PROCEDURES WERE MISLEADING. THE MANUFACTURER ISSUED A TEMP REVISION TO THE MANUAL FOR LANDING GEAR ASSEMBLY.
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: commercial pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Medical certificate: Class 1 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 13,436 hours
- Last inspection: continuous airworthiness programme, July 22, 1984; 53 hours since
- Maximum gross weight: 43,500 lb
- Seats: 59
- Landing gear: retractable
- Engine: P&W PT6-50 (turboprop); 0 hours total
The flight
- Departed from: CPR Casper WY at 7:55 am
- Destination: DEN Denver CO
- Flight plan: IFR
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: night, dark
- Wind: from 280° at 5 knots
- Visibility: 20 statute miles
- Sky: overcast at 25,000 ft
- Temperature: 64°F (18°C), dew point 54°F (12°C)
- Altimeter: 30.00 inHg
- Observation at 10:02 am from DEN
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 2 | |||
| Passengers | 4 |
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 N9058P 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.