CHI01LA115 · Maule MX-7-180AC
Maule MX-7-180AC · Accident: total loss of engine power (non-mechanical) en route
From 8Y2 · Buffalo, MN to Flying Cloud Airport (FCM)
Event
- NTSB case
- CHI01LA115
- 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
Maule MX-7-180AC
- Aircraft type
- Maule MX-7
- 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
- N4261E
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From 8Y2 · Buffalo, MNTo Flying Cloud Airport (FCM), Minneapolis, MN
- 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
- En route · climb to cruise
- First occurrenceThe 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
- Total loss of engine power (non-mechanical)
- 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
- Fuel system › Contamination, water
- Pilot in command › Aircraft preflight, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The airplane landed on a muddy agricultural field following a total loss of engine power during an initial climb through 300-500 feet agl. The pilot obtained 8 gallons of aviation fuel from a fixed base operator. Post accident inspection of the airplane's fuel system revealed the presence of water in the airplane's fuel lines and carburetor. The lineman who fueled the airplane reported that it was his second day on the job and he had not received training in the handling of fuel with respect to fuel contamination.
Probable cause
the water contamination of the aircraft's fuel system and the inadequate preflight performed by the pilot. The muddy terrain was a contributing factor.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI01LA115
- Event ID
- 20010416X00762
- Case number
- CHI01LA115
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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: a8e8dcb656bbf8395f1a0d72deacddd7a2d619617af0ad733a17b1ad14ef562c; retrieved 2026-09-21T19:59:05.261Z.