Cessna 177RG accident near Cheyenne, Wyoming, June 29, 1984
On June 29, 1984 at about 7:14 pm local time, a Cessna 177RG, registered N33215, was substantially damaged in an accident near Cheyenne, Wyoming (Cheyenne 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
- June 29, 1984 · about 7:14 pm local time
- Place
- Cheyenne, Wyoming · Cheyenne · map
- Type
- Accident
- Injuries
- No one was hurt; 3 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 177RG · all 177RGs on the register
- Registration
- N33215 · no longer on the register · serial 177RG0922
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE AIRCRAFT COLLIDED WITH A TREE DURING AN EMERGENCY LANDING FOLLOWING LOSS OF THROTTLE CONTROL AT A LOW RPM. EXAMINATION REVEALED THAT AN UNCERTIFIED THROTTLE CABLE HAD BEEN INSTALLED, IT FAILED AT THE ATTACHMENT TO THE THROTTLE BODY.
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: 940 hours in all; 31 in this make and model; 33 in the last 90 days
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 1,400 hours
- Last inspection: 100-hour inspection, October 28, 1983; 26 hours since
- Maximum gross weight: 2,800 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming IO-360-A1B6D (piston); 0 hours total
The flight
- Flight plan: none
- Runway 12, 6,691 ft by 150 ft
Weather at the time
- Light: daylight
- Wind: from 120° at 12 knots
- Visibility: 40 statute miles
- Sky: clear
- Temperature: 75°F (24°C), dew point 0°F (-18°C)
- Altimeter: 30.00 inHg
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.
Other NTSB records under N33215 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.