# NTSB WPR26LA034: Piper PA-28R-200, N5107S, La Verne, CA, October 29, 2025 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 3 · Limited · Preliminary report - Date: October 28, 2025, 18:45 local (Oct 29, 2025, 01:45 UTC) - Place: La Verne, CA - Coordinates: 34.091667, -117.78177 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.0917&lon=-117.7818&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute: 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: Federal Aviation Adminstration - NTSB case key (mKey): 201936 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR26LA034 - NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/201936/pdf - Page: https://openairdocs.org/ntsb/WPR26LA034 ## Preliminary report On October 28, 2025, about 1845 Pacific daylight time, a Piper Arrow PA-28R-200, N5107S, sustained substantial damage when it was involved in an accident near Upland, California. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot and the passenger were about 33 miles west of Cable Airport (KCCB), Upland, California, when the pilot observed the oil pressure decrease to the lower limit of the green arc. About 14 miles west of CCB, the oil pressure reduced to zero; however, all other engine indications appeared normal. The pilot then decreased the power to about 16–17 inches of Hg and reviewed his checklist. He obtained approval from air traffic control (ATC) to initiate a descent and then commenced a descent from about 5,000 ft mean sea level (msl). The pilot subsequently adjusted the airplane’s course slightly southward to avoid elevated terrain to the north and to maintain proximity to Brackett Field Airport (POC – La Verne, CA) as a precaution. As the airplane descended through 3,000 ft msl, the pilot observed an ”explosion” within the engine cowling. Initially, he observed that there was significant engine roughness accompanied by a minor reduction in power while the airplane began to shake. The pilot then reduced the throttle further; however, he was unable to regain engine power. After determining the airplane’s position, he completed an engine failure checklist, declared an emergency, and informed ATC of the circumstance, and requested to land at POC. The pilot then observed smoke emanating from the cowling, which prompted him to lean the mixture, deactivate the fuel pump, and execute a power-off emergency landing. ATC advised the pilot of the weather conditions at POC, after which he transferred to POC’s tower frequency and updated the controller. He maintained the flaps in the 0° position and retracted the landing gear during the base to final turn. As the pilot maneuvered the airplane onto runway 26L, the stall warning activated. The pilot stated that the airplane stalled in a level attitude about 15-20 feet above the ground and subsequently landed hard on the runway. The airplane touched down on the northern edge of the displaced threshold, where it slid to a stop oriented sideways at the center of runway 26L. The airplane sustained substantial damage to both wings and the lower fuselage. The airplane was recovered to a secure facility for further examination. ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event) ## Aircraft - Registration: [N5107S](https://openairdocs.org/aircraft/N5107S), registered now, S/N 28R-7135108, built 1971 (OpenAirDocs) - Reported make and model: PIPER PA-28R-200 (NO SERIES) - Registry model: [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200) (registry code 7102811) (OpenAirDocs) - Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 28R-7135108 - Year built: 1971 - Airframe hours: 4290.98 - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Jdc Aviation LLC - Registered owner: Jdc Aviation LLC - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, August 21, 2025, 12.3 hours before - Departed: SBP, San Luis Obispo, CA - Destination: CCB, Upland, CA - Airport: POC, Brackett Fld, runway 08R/26L, 4,840 × 75 ft, asphalt - Equipment: ADS-B ## Weather - Conditions: Visual (VMC), Dusk - Lowest ceiling: none - Temperature: 86 °F, dew point 34 °F - Altimeter: 29.99 inHg - Observed at: KPOC, 1 nm away ## 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 20251028016869A](https://openairdocs.org/incident/20251028016869A), Oct 28, 2025: Piper PA-28R-200, La Verne, CA, Substantial damage. On 10-28-2025, aircraft departed ksba on return heading to kccb. Pilot stated that after reaching altitude of 5,500 feet east of kbur he noticed the oil… ## Other investigations on N5107S (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB MIA75FLG22](https://openairdocs.org/ntsb/MIA75FLG22), Feb 7, 1975: Piper PA-28R (N5107S), Myrtle Beach, SC, substantial damage From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; 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.