WPR26LA006 · SIAI-Marchetti SM 1019
D & D Airpark SIAI-Marchetti SM 1019 · Accident: powerplant system/component malfunction/failure en route
From Tri Cities Airport (PSC) to an unrecorded destination
Event
- NTSB case
- WPR26LA006
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Ongoing
- Event fatalities
- Unknown
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
SIAI-Marchetti SM 1019
- Aircraft type
- Siai Marchetti SM-1019
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N3172U
- Operator
- D & D Airpark
- Onboard fatalities
- Unknown
- Route
- From Tri Cities Airport (PSC), Pasco, WATo not recorded
- Aircraft age
- About 49 years (built 1976)
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- En route
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Powerplant system/component malfunction/failure
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
No findings designated as a cause are recorded in the NTSB data yet.
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
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.
Verbatim NTSB factual narrative from the NTSB dataset
Sources
NTSB record WPR26LA006
- Event ID
- 20251006201797
- Case number
- WPR26LA006
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, coordinates. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: f2413ce344c114f0db5368f52aae11a979d548a8d3e09da5deaecedd84e206a3; retrieved 2026-09-16T20:26:10.265Z.