# NTSB WPR26LA012: Piper PA24, N7946P, Vineyard, UT, October 8, 2025

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 3 · Limited · Preliminary report
- Date: October 7, 2025, 18:25 local (Oct 8, 2025, 00:25 UTC)
- Place: Vineyard, UT
- Coordinates: 40.294, -111.76204
- Nearby events: https://openairdocs.org/map.md?lat=40.2940&lon=-111.7620&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute-cruise: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Investigation ongoing
- Investigation class: Class 3
- NTSB office: Western Pacific Region
- Parties: FAA FSDO
- NTSB case key (mKey): 201822
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR26LA012
- NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/201822/pdf
- Page: https://openairdocs.org/ntsb/WPR26LA012

## Preliminary report

On October 7, 2025, about 1825 mountain daylight time, a Piper PA24 airplane, N7946P, was substantially damaged in an accident near Vineyard, Utah. The pilot and pilot-rated passenger were not injured. The flight was conducted under Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that he and a pilot-rated passenger departed South Valley Regional Airport (SVR), West Jordan, Utah. During cruise flight about 7,500 ft mean sea level, the pilot heard a knocking sound and noted engine shuddering. He applied carburetor heat and followed the emergency procedure checklist; however, his attempt to restore power was unsuccessful, and he then advised air traffic control of an engine problem. The power continued to degrade, and the pilot turned toward Provo Airport (PVU) Provo, Utah, and the pilot performed a forced landing on the east shoreline of Utah Lake. The airplane touched down on the shoreline and struck a stump during the rollout, resulting in substantial damage to the left wing. The airplane was recovered for further examination.

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Enroute-cruise: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Piper PA-24, 4 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=7102402), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md)

## Aircraft

- Registration: [N7946P](https://openairdocs.org/aircraft/N7946P), registered now, S/N 24-3182, built 1962 (OpenAirDocs)
- Reported make and model: PIPER PA24
- Registry model: [Piper PA-24](https://openairdocs.org/model/piper-pa-24) (registry code 7102402) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 24-3182
- Year built: 1962
- Damage: Substantial damage
- Flight: Personal, Part 91
- Departed: SVR, West Jordan, UT
- Destination: VEL, Vernal, UT

## 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 20251007017899A](https://openairdocs.org/incident/20251007017899A), Oct 7, 2025: Piper PA-24, Provo, UT, Substantial damage. The pilot reported that after flying for about 45 minutes, the engine popped and started to vibrate, then immediately went silent. He initiated a forced…

## Other investigations on N7946P (2)

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 MIA89LA244](https://openairdocs.org/ntsb/MIA89LA244), Sep 10, 1989: Piper PA-24-180 (N7946P), Titusville, FL, substantial damage. Probable cause: FAILURE OF THE PRIVATE PILOT (DUAL STUDENT) TO ASSURE THE FUEL SELECTOR WAS POSITIONED TO THE PROPER TANK, WHICH RESULTED IN FUEL STARVATION; AND INADEQUATE SUPERVISION BY THE INSTRUCTOR PILOT (CFI).…
- [NTSB MIA67F0046](https://openairdocs.org/ntsb/MIA67F0046), Jul 15, 1966: Piper PA-24 (N7946P), Marietta, GA, substantial damage

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.

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