# NTSB SEA98LA028: Piper PA-24-250, N8422P, Sutherlin, OR, January 23, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: January 23, 1998, 13:25 local (21:25 UTC) - Place: Sutherlin, OR - Coordinates: 43.410938, -123.109573 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.4109&lon=-123.1096&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report December 8, 1998 - Report: Approved by Office Director - NTSB case key (mKey): 42748 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA98LA028 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42748/pdf - Page: https://openairdocs.org/ntsb/SEA98LA028 ## Probable cause Loss of engine power for an undetermined reason. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - weather condition - icing conditions - reason for occurrence undetermined (cause) - Forced landing, emergency descent/landing - On ground/water encounter with terrain/water, landing - roll - terrain condition - soft ## Analysis The pilot reported that while in cruise flight, the airframe began to pick up light rime ice. The pilot elected to return to his departure point and was cleared to descend to a lower altitude. After the flight descended to the lower altitude, the engine was unable to maintain full power and began to run rough. The aircraft was unable to maintain altitude to reach the airport and the pilot elected to land the airplane on an open field. During the gear up landing to the soft field, the airplane collided with a berm and barb wire fence. After the aircraft was recovered, it was determined that the engine was in a condition to be test run. A new propeller was installed, a battery was connected, and a fuel supply was rigged. The engine was started and ran normally at idle power until the engine was warmed up. The engine was then run to 1700 RPM and a magneto check was accomplished. The oil temperature, oil pressure, EGT, and suction were all within normal parameters. The inlet air box was severely damaged during the accident sequence. The alternate air door would operate only part way open, however, the hinge was clear and free. The air filter was a foam filter that was in good condition, with no sign of deterioration or blockage. ## Factual narrative On January 23, 1998, at 1325 Pacific standard time, a Piper PA 24-250, N8422P, operated by the pilot as a 14 CFR Part 91 personal flight, collided with the terrain and subsequently a fence during a forced landing in an open field two miles east of Sutherlin, Oregon. Instrument meteorological conditions prevailed at the time and an instrument flight rules flight plan was filed. The airplane was substantially damaged and the commercial pilot and his passenger were not injured. The flight had departed from Eugene, Oregon, about one hour and ten minutes prior to the accident. During a telephone interview and subsequent written statement, the pilot reported that while cruising at 11,000 feet in light cirrus clouds, the airplane began to pick up light rime icing. The pilot stated that he decided to turn around and return to Eugene. Air traffic control cleared the flight to descend to 8,000 feet. The pilot reported that while at 8,000 feet, the engine was unable to obtain more that 15 inches of manifold pressure and was running rough. The pilot notified air traffic control that he was experiencing engine problems and asked to descend further. Air traffic control cleared the flight to descend to 7,000 feet and when terrain permitted, the flight was cleared to descend to 6,000 feet. At 6,000 feet, the airframe ice began to melt, however, the engine continued to operate at partial power. The aircraft was unable to maintain altitude and after the flight cleared the clouds, the pilot selected an open field for a forced landing. The airplane touched down, gear-up, in a soft field. The airplane collided with a berm and barb wire fence before coming to rest. The aircraft was recovered from the field and transported to a maintenance facility in Roseburg, Oregon. The engine was cleaned to remove mud. It was determined that the engine was in a condition to be test run. The propeller was replaced, a battery was installed, and a fuel supply was rigged. A Federal Aviation Administration Inspector from the Portland, Oregon, Flight Standards District Office was present for the engine run. The inspector reported that the electric fuel boost pump was switched on, with positive results, and indicated a 20 PSI output. The electric boost pump was then switched off and the starter was engaged. The engine started without difficulty and idled normally. After the engine was warmed up, the engine was run-up to 1700 RPM and a magneto check was accomplished. The oil temperature, oil pressure, EGT, and suction pressure were all within normal parameters. The engine was then shut down and secured. The inlet air box was severely damaged during the accident sequence. The alternate air door would operate only part way open, however, the hinge was clear and free. The air filter was a foam Brackett filter that was in good condition, with no sign of deterioration or blockage. ## Aircraft - Registration: [N8422P](https://openairdocs.org/aircraft/N8422P), registered now, S/N 24-3672, built 1964 (OpenAirDocs) - Reported make and model: Piper PA-24-250 - Registry model: [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250) (registry code 7102404) (OpenAirDocs) - Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 24-3672 - Airframe hours: 5513 - Engines: Lycoming TIO-540-C 250 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Donald S. Brown - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 2, 1997, 43 hours before - Departed: EUG, EUGENE, OR - Destination: MHR, SACRAMENTO, CA - Flight plan: IFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 53; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 4,050 total, 222 in this make and model, 3,708 as pilot in command, 34 in the last 90 days, 6 in the last 30 days ## Weather - Conditions: Instrument (IMC), Day - Wind: 220° at 15 knots, gusting 30 - Visibility: 10 statute miles - Temperature: 50 °F - Altimeter: 29.00 inHg ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19980123001509A](https://openairdocs.org/incident/19980123001509A), Jan 23, 1998: Piper PA24250, Sutherlin, OR, Substantial damage. Engine problem. Unable hold altitude. Landed gear up in soft field. Hit berm and fence. Indicates induction icing. (-23) see ptrs narrative SEA98LA028 ## Other investigations on N8422P (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB CEN26FA280](https://openairdocs.org/ntsb/CEN26FA280), Aug 4, 2026: Piper PA-24-250 (N8422P), Bethany, MO, destroyed, 1 fatal, investigation ongoing From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.