CEN23LA313 · Pietenpol AIRCAMPER
Pietenpol AIRCAMPER · Accident: loss of engine power (partial) en route
From Gardner Municipal Airport (K34) to Brodhead Airport (C37)
Event
- NTSB case
- CEN23LA313
- 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
- Event fatalities
- Unknown
- 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
Pietenpol AIRCAMPER
- Aircraft type
- Pietenpol AIRCAMPER
- 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
- N34KP
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Gardner Municipal Airport (K34), Gardner, KSTo Brodhead Airport (C37), Brodhead, WI
- Aircraft age
- About 23 years (built 2000)
- 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
- 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
- Aircraft › Aircraft power plant
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported that shortly after takeoff, the engine started to run rough. The pilot reversed course back toward the departure airport when the roughness increased and then the engine lost all power. The pilot performed a forced landing to a field and the airplane nosed over, which resulted in substantial damage to the wings and fuselage. An examination of the engine revealed that the No. 3 cylinder spark plug’s firing end contained hard, cinder-like deposits, consistent with lead fouling. When tested, the No. 3 cylinder spark plug did not spark; however, after it was cleaned, the spark plug functioned normally. No other mechanical anomalies with the engine or airframe were noted that would have precluded normal operation. The pilot reported that he used 100LL aviation fuel in the engine. It is likely that the loss of power was due to the lead fouling on the No. 3 cylinder spark plug.
Probable cause
A loss of engine power due to lead fouling of a spark plug.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN23LA313
- Event ID
- 20230719192661
- Case number
- CEN23LA313
- 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: 7a3f0cdc92aea8692887165a71310d35154e24e3bc654ef4d15c54ca52706822; retrieved 2026-09-16T17:52:47.483Z.