WPR24LA174 · Beech 35-C33A
L A M Capital Management Beech 35-C33A · Accident: fuel contamination on approach
From Hollister Municipal Airport (CVH) to Montgomery-Gibbs Executive Airport (MYF)
Event
- NTSB case
- WPR24LA174
- 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
- 0
- 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
Beech 35-C33A
- Aircraft type
- Beechcraft 35
- 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
- N1259M
- Operator
- L A M Capital Management
- Onboard fatalities
- Unknown
- Route
- From Hollister Municipal Airport (CVH), Hollister, CATo Montgomery-Gibbs Executive Airport (MYF), San Diego, CA
- Aircraft age
- About 57 years (built 1967)
- 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
- Approach · VFR pattern final
- 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
- Fuel contamination
- 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
- Aircraft › Fluids/miscellaneous hardware
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot reported that, while approaching the destination airport at the conclusion of a cross-country flight with the fuel selector set to the fullest tank, the engine began to run rough and lost partial power. Unable to reach the runway, the airplane landed hard short of the runway, resulting in substantial damage.
A postaccident examination revealed no evidence of mechanical malfunction or failure. Fuel system continuity was confirmed, and a test run of the engine revealed no anomalies. The fuel strainer screen was removed and exhibited areas of corrosion. A water-detecting paste revealed the presence of water in the fuel. The fuel manifold was disassembled. The rubber diaphragm inside was brittle and exhibited peeling, and there were numerous rubber flakes found, but it could not be determined if the contaminants would have affected the operation of the unit. There was evidence of rust on the screen and in the cavity. The fuel strainer screen and the fuel cap (filler) receptacles also contained rust consistent with water in the fuel system. Although the investigation was unable to determine when the water was introduced into the fuel system, the presence of rust was consistent with long-term water exposure.
Given the successful engine test run and the lack of anomalies of the fuel system, and the corrosion observed on some fuel system components, it is likely that the loss of engine power was the result of water contamination of the fuel system.
Probable cause
A partial loss of engine power due to water contamination of the fuel system.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR24LA174
- Event ID
- 20240604194392
- Case number
- WPR24LA174
- 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, cause areas. 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: aff4b2cfff3da60da2bf3f3a45d8cd96c6a9d86af73140a26c2283633cf9c55c; retrieved 2026-09-16T18:51:05.124Z.