# NTSB WPR26LA006: Siai-Marchetti SM 1019, N3172U, Richland, WA, October 2, 2025 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 3 · Limited · Preliminary report - Date: October 2, 2025, 10:50 local (17:50 UTC) - Place: Richland, WA · Runway 19 - Coordinates: 46.305639, -119.30418 - Nearby events: https://openairdocs.org/map.md?lat=46.3056&lon=-119.3042&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute: Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Investigation ongoing - Investigation class: Class 3 - NTSB office: Western Pacific Region - Parties: FAA - NTSB case key (mKey): 201797 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR26LA006 - NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/201797/pdf - Page: https://openairdocs.org/ntsb/WPR26LA006 ## Preliminary report On October 2, 2025, about 1050 Pacific daylight time, a Siai-Marchetti SM 1019, N3172U, sustained substantial damage when it was involved in an accident near Richland, Washington. 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 reported that he departed Tri-Cities Airport (PSC), Pasco, Washington, on a local flight. About 45 minutes into the flight, he observed uncommanded engine rpm oscillations and decided to make a precautionary landing at Richland Airport (RLD), Richland, Washington. While on the downwind leg for runway 19, as the pilot moved the condition lever forward, it felt like the propeller was moving unsolicited, from beta to flight idle. He recalled that when he tried to return the propeller from beta, to flight idle, the engine rpm oscillations increased significantly. As the pilot turned onto final for runway 19, he noticed that the engine rpm oscillations became more erratic. The pilot stated that when the propeller felt like it had entered beta, the airspeed decreased below the airplane’s stall speed and thrusted the occupants forward in their seats. Subsequently, the pilot lowered the nose added power and noted that the slightest increase of the power control lever resulted in an extreme engine rpm increase followed by the nose of the airplane pitching upward. He applied 15° flaps and slowed the airplane to about 50 knots. The pilot stated that after touchdown, the landing roll was normal for about 50 ft. As he applied brakes, the engine rpm increased and the airplane became airborne. Subsequently, the airplane turned left, touched down hard on the runway, and the right main landing gear collapsed. Subsequently, the airplane exited the left side of the runway and came to rest upright. Postaccident examination of the airplane revealed that the right wing was substantially damaged. The airplane was recovered to a secure location for further examination. ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute: Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340) (defining event); cases with it: [Siai-Marchetti SM 1019, 1 case](https://openairdocs.org/ntsb-events/340/sequence.md?model=8121215), [All aircraft, 820 cases](https://openairdocs.org/ntsb-events/340/sequence.md) - [Landing: Hard landing](https://openairdocs.org/ntsb-events/092); cases with it: [Siai-Marchetti SM 1019, 1 case](https://openairdocs.org/ntsb-events/092/sequence.md?model=8121215), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/sequence.md) - [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Siai-Marchetti SM 1019, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=8121215), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [Siai-Marchetti SM 1019, 2 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=8121215), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Aircraft - Registration: [N3172U](https://openairdocs.org/aircraft/N3172U), registered now, S/N 038, built 1976 (OpenAirDocs) - Reported make and model: SIAI-MARCHETTI SM 1019 - Registry model: [Siai-Marchetti SM 1019](https://openairdocs.org/model/siai-marchetti-sm-1019) (registry code 8121215) (OpenAirDocs) - Registry engine: [Allison 250-B15G](https://openairdocs.org/engine/allison-250-b15g) (registry code 03064, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 038 - Year built: 1976 - Airframe hours: 1558.5 - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: D & D Airpark LLC - Registered owner: D & D Airpark LLC - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, September 4, 2025 - Departed: PSC, Pasco, WA - Destination: Same as departure - Airport: RLD, Richland, runway 01/19, 4,009 × 75 ft, asphalt - Equipment: ADS-B, Angle of attack indicator ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 52 °F - Altimeter: 30.07 inHg - Observed at: KRLD - METAR: METAR KRLD 021835Z AUTO 00000KT 10SM CLR 19/11 A3007 RMK AO2 T01900105= ## 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 20251002014589A](https://openairdocs.org/incident/20251002014589A), Oct 2, 2025: Siai-Marchetti SM 1019, Richland, WA, Substantial damage. Pilot noticed RPM fluxuations in cruise flight and was getting worse. Decided to land the aircraft. Pilot moved condition lever forward for landing it felt… 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.