CEN25LA165 · Cessna T206 H
Aero-Graphics Cessna T206 H · Accident: powerplant system/component malfunction/failure while maneuvering
From Bruce Campbell Field (KMBO) to Natchez–Adams County Airport / Hardy-Anders Field (KHEZ)
Event
- NTSB case
- CEN25LA165
- 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
Cessna T206 H
- Aircraft type
- Cessna 206
- 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
- N27DV
- Operator
- Aero-Graphics
- Onboard fatalities
- Unknown
- Route
- From Bruce Campbell Field (KMBO), Madison, MSTo Natchez–Adams County Airport / Hardy-Anders Field (KHEZ), Natchez, MS
- Aircraft age
- About 26 years (built 1999)
- 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
- Maneuvering · low-altitude flying
- 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
- Powerplant system/component malfunction/failure
- 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 systems
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported he was about 4 hours and 45 minutes into a survey flight when the engine suddenly lost power. He attempted to troubleshoot and was unable to regain engine power before making an emergency landing. The airplane sustained substantial damage to the fuselage. Postaccident examination of the engine revealed that a B-nut was loose on the fuel line at the fuel flow divider. When the electric boost pump was turned on during the examination, fuel flowed freely out of the loose connection. Additionally, multiple discrepancies were noted throughout the engine compartment, including (but not limited to): cylinder base nuts that were loose, a cylinder temperature probe that was hanging by its wire, and grommets that were missing or in disrepair along the fuel and oil lines. Maintenance performed about a week before the accident included the removal and replacement of three cylinders and the completion of a 100-hour inspection. It is possible that the mechanic performing the maintenance removed the fuel line to facilitate the cylinder replacement. Regardless of whether or not the mechanic removed the fuel line, the loose B-nut and other discrepancies found in the engine compartment indicate that the 100-hour inspection completed on the same day as the cylinder replacements was inadequate.
Probable cause
Maintenance personnel’s improper maintenance, which resulted in a loss of engine power due to fuel starvation as the result of a loose fuel line B-nut. Contributing to the accident was an inadequate 100-hour inspection performed after the recent maintenance.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN25LA165
- Event ID
- 20250501200092
- Case number
- CEN25LA165
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (5)
- 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: f656195eecf702a13be94e1bbca7762910e2deb3e60a079088ea1ff67294ea90; retrieved 2026-09-16T19:51:37.835Z.
- Corrected after a review of the NTSB narrative, which states these values explicitly: departure. Misspelled city name; KMBO is Bruce Campbell Field, Madison, MS.