WPR11LA039 · Lansdorf Qualt 200
Lansdorf Qualt 200 · Accident: loss of engine power (partial) during takeoff
From Sonoma Skypark Airport (0Q9) to Petaluma Municipal Airport (O69)
Event
- NTSB case
- WPR11LA039
- 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
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- 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
Lansdorf Qualt 200
- Aircraft type
- Lansdorf QUALT
- 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
- N3215S
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Sonoma Skypark Airport (0Q9), Sonoma, CATo Petaluma Municipal Airport (O69), Petaluma, CA
- Aircraft age
- Not recorded
- 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
- Takeoff
- 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
- Loss of engine power (partial)
- 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
- Not determined › Not determined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported that after takeoff it felt as if the airplane was in a strong downdraft or strong tailwind gust and that "somehow there was not enough power.” When the airplane reached about 100 to 150 feet above ground level, it veered right, rapidly descended, and collided with a warehouse. A witness reported that he heard the engine running but that it was only producing partial power. During the postaccident examination of the engine, the engine started without hesitation and ran smoothly during a test run. Although the reported weather conditions were conducive to serious carburetor icing at cruise power, it could not be determined if carburetor icing was the reason for the partial loss of engine power. Further, weather conditions were not conducive to strong wind.
Probable cause
A partial loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR11LA039
- Event ID
- 20101106X00059
- Case number
- WPR11LA039
- 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. 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: 7075674db7473c245d20834fabb24a1aa70ffc626e611780992bf55915ed7c28; retrieved 2026-09-15T15:32:33.309Z.