Cessna 170B accident near Casper, Wyoming, August 4, 1999
On August 4, 1999 at about 7:04 pm local time, a Cessna 170B, registered N4448B, was substantially damaged in an accident near Casper, Wyoming (Natrona County airport). It was a personal 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 pilot's selection of a wrong runway for landing and his failure to maintain directional control.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 4, 1999 · about 7:04 pm local time
- Place
- Casper, Wyoming · Natrona County · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 170B · all 170Bs on the register
- Registration
- N4448B · registry record · serial 26792
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
During landing after a cross-country flight, the aircraft departed the side of the runway as a result of a ground loop. The pilot had been cleared to land on runway 8 and performed the landing on runway 3. Wind at the time was recorded to be from 090 degrees at 14 knots. The calculated headwind component was 7 knots and the calculated crosswind component was 12 knots.
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: single-engine land; single-engine sea; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 995 hours in all; 750 in this make and model; 70 in the last 90 days; 10 in the last 30 days; 920 as pilot in command; 18 on instruments
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: rgt
The aircraft
- Airframe total time: 4,250 hours
- Last inspection: annual inspection, July 3, 1999; 30 hours since
- Maximum gross weight: 2,200 lb
- Seats: 2
- Landing gear: fixed
- Engine: Franklin 6A-350-C1 (piston); 0 hours total
The flight
- Departed from: OXV Knoxville IA at 3:00 pm
- Destination: CPR
- Flight plan: none
- Runway 3, 10,600 ft by 150 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 090° at 14 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 79°F (26°C), dew point 50°F (10°C)
- Altimeter: 30.00 inHg
- Observation at 6:55 pm from CPR
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.
Other NTSB records under N4448B 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.