Piper PA-22-135 accident near Greeley, Colorado, September 14, 1999
On September 14, 1999 at about 6:00 pm local time, a Piper PA-22-135, registered N3329A, was substantially damaged in an accident near Greeley, Colorado (Greeley-Weld 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 inadvertent ground loop during landing roll. Factors were the malfunctioning self centering locking device on the tail wheel, the right rear quartering tail wind, and the 3 to 4 inch high berm along the edge of the runway.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 14, 1999 · about 6:00 pm local time
- Place
- Greeley, Colorado · Greeley-Weld County · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-22-135 · all PA-22-135s on the register
- Registration
- N3329A · no longer on the register · serial 22-1604
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot said that he was landing on runway 35 with a right quartering tailwind of 6 knots. The landing appeared normal until about 40 to 45 knots when the airplane began drifting to the left of centerline. He said that he corrected the airplane back to the centerline, and then it suddenly ground looped to the right. The pilot said that there was a 3 to 4 inch high dirt berm along the side of the runway. He said that when his left main landing gear and tail wheel impacted this berm, they folded under the airplane. He further stated that the rubber skid marks on the runway indicated that the tail wheel was oscillating, or shimmying. The maintenance person who recovered the airplane said that the self-centering tail wheel locking device was 'well lubricated,' which is what the maintenance manual calls for. He said the aerial application pilots that fly airplanes with similar tail wheel self-centering devices always instruct him not to lubricate their self-centering devices when he performs maintenance on their aircraft. They told him that it was easier to land in a crosswind when their tail wheel self-centering devices were dry.
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: airline transport pilot, commercial pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane; instrument: helicopter; rotorcraft: helicopter
- Flight time: 7,368 hours in all; 38 in this make and model; 40 in the last 90 days; 36 in the last 30 days; 4,467 as pilot in command
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 3,908 hours
- Last inspection: annual inspection, April 1, 1999; 6 hours since
- Maximum gross weight: 1,950 lb
- Seats: 3
- Landing gear: fixed
- Engine: Lycoming O-290-D2 (piston); 0 hours total
The flight
- Departed from: LQR Larned KS at 3:35 pm
- Destination: GXY
- Flight plan: none
- Runway 35, 3,599 ft by 75 ft
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 63°F (17°C), dew point 34°F (1°C)
- Altimeter: 30.00 inHg
- Observation at 6:35 pm from GXY
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.