NTSB CAROL · Event
Event CHI02LA245
Registry · N8910D
FAA Aircraft Registry record.
Make / Model
PIPER PA-22-150
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19580324
ADS-B equipped
Yes — Mode-S AC4B67
Registrant of record
ARMES JOHN W
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A loss of engine power due to a seized exhaust valve. A related factor was the mowed hay field.
Factual narrative
On August 7, 2002, at 2000 central daylight time, a Piper Tri-Pacer (PA22-150), N8910D, piloted by a private pilot, was substantially damaged during a precautionary landing attempt approximately two miles southeast of Sauk City, Wisconsin. The pilot reported that he experienced a partial loss of engine power while in cruise flight. The airplane departed from Reedsburg Municipal Airport (C35), Reedsburg, Wisconsin, and was returning to Sauk City when the engine problem occurred. The airplane is based at a turf field, an off-airport location, near Sauk City. The flight was being conducted under 14 CFR Part 91 and was not on a flight plan. Visual meteorological conditions prevailed at the time. The pilot and one passenger reported minor injuries. The second passenger reported no injuries. In his written statement, the pilot noted that the engine started to miss. He located an emergency landing site and circled the area while trying to resolve the problem. He stated that he "checked carb icing, mags and mixture." Since he was losing altitude, he decided to land in the selected field instead of attempting to reach the farm runway (where the aircraft is based). He states: "Used full flaps, cleared high wires, slipped down and touched down at about 70 mph. Pulled hard on brakes for 130~150 yards and hit farmers fence. Plane tipped forward and came to a stop." The FAA inspector on-scene performed an engine examination. He noted a lack of compression and a stuck exhaust valve on the forward/right cylinder. No other abnormalities were noted. In addition, the inspector estimated the available landing distance at approximately 1,500 feet, and described it as a newly mowed hay field. According to FAA records, the pilot held a private pilot certificate with a single engine land rating issued July 27, 1993. His most recent third class medical certificate was issued in April 1999. The pilot reported accumulating 100 hours total time, all of which were in the same make and model as the accident aircraft, and 2 hours within the last 90 days. The FAA inspector assigned to the accident reviewed the pilot's logbook and noted that no flight review endorsements had been entered since his private pilot certificate was issued. Weather conditions at the scene were reported by the pilot as clear, 15 miles visibility and calm winds. Conditions at the Dane County Regional Airport (MSN), Madison, Wisconsin, 16 nm to the southeast, at 1953 cdt, were reported as clear, 10 miles visibility and winds from 050 deg at 3 knots. The pilot reported experiencing a partial loss of engine power while in cruise flight. Efforts to correct the problem with carburetor heat, switching magnetos and altering the mixture were unsuccessful. The pilot elected to make an emergency landing in a newly mowed hay field. During the landing rollout, the airplane hit a fence at the edge of the field and was substantially damaged. Available field length was at least 1,500 feet. During an engine examination, the FAA inspector on-scene noted a lack of compression and a stuck exhaust valve on the forward/right cylinder. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2002_CHI02LA245.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (icing). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2026 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Presentation
NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
- NASA NTRS 2024 · Presentation
NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
Browse the full corpus — academia portal ↗