CHI00LA103 · Piper PA-28-140
Piper PA-28-140 · Accident: loss of engine power en route
From Mora Municipal Airport (JMR) to an unrecorded destination
Event
- NTSB case
- CHI00LA103
- 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-28-140
- Aircraft type
- Piper PA-28
- 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
- N54454
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Mora Municipal Airport (JMR), Mora, MNTo not recorded
- 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 · 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
- Loss of engine power
- 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
- Terrain condition › None suitable
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The airplane encountered an in-flight loss of engine power and sustained substantial damage on impact with a fence and vegetation during a forced landing in a field. The pilot had minor injury. The passenger was uninjured. The engine's number four cylinder's exhaust valve spring and valve were found failed. The valve spring had a 45-degree fracture approximately 0.75 inches from an end. The valve head was found with approximately a third of its' face fractured off. A section of valve head was found within the cylinder. The valve head's face and head section had indentations. The pilot stated, 'With the lake to our west, a bunch of trees to our north, a house to our south behind us, when the engine quit. I chose to turn 90[degrees] to the east fly under some high tension wires, which I knew I could do safely, to a field on the other side. The field was not very wide, but I felt it was safer for landing without any houses close by. Being 200 to 300 feet above the ground I didn't have the altitude to turn 180[degrees] and land in the field below. I could not get stopped in the narrow field, so consequently we went through the barb wire fence on the east side and hit a clump of bushes with our left wing, which brought us to a stop.'
Probable cause
A loss of engine power due to the failure of the number four cylinder's exhaust valve spring and exhaust valve. Contributing to the accident were, the barbwire fence and the clump of high vegetation encountered by the airplane.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI00LA103
- Event ID
- 20001212X20773
- Case number
- CHI00LA103
- 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: 43492e2129e3a43b0994053af4ff1451263341a17bf3a118797ebd3752372923; retrieved 2026-09-21T20:16:24.822Z.