ERA20LA198 · Piper PA-24-180
Piper PA-24-180 · Accident: fuel contamination during initial climb
From Humboldt Municipal Airport (M53) to an unrecorded destination
Event
- NTSB case
- ERA20LA198
- 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
Piper PA-24-180
- Aircraft type
- Piper PA-24
- 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
- N6989P
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Humboldt Municipal Airport (M53), Humboldt, TNTo not recorded
- Aircraft age
- About 60 years (built 1960)
- 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
- Initial climb
- 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 as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
New avionics had just been installed in the airplane after a 5 week wait, and the purpose of the accident flight was for the pilot to test fly the airplane with the installing mechanic. The pilot performed an uneventful preflight inspection of the airplane and after liftoff there was a reduction in engine rpm before the engine lost power completely. The pilot preformed a forced landing to a golf course, resulting in substantial damage to the fuselage and both wings. No mechanical anomalies were discovered during a postaccident examination of the engine that would have precluded normal operation; however, a fuel sample from the carburetor bowl displayed a cloudy (green/yellow) tint instead of the expected clear, blue coloring of aviation fuel. No other contamination was observed within the airplane’s fuel system and the source of the contamination could not be identified. Given this information, it is likely that the engine lost power due to contaminated fuel that migrated through the fuel system into the carburetor.
Probable cause
A partial loss of engine power due to contaminated fuel.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA20LA198
- Event ID
- 20200529X52724
- Case number
- ERA20LA198
- 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, 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: f43983889e6521e008172075982371f19b0e5c80e9d7d87b9a60d67feea86dd2; retrieved 2026-09-16T11:42:16.401Z.