CEN16LA201 · Cessna 402B B
Cessna 402B B · Accident: fire/smoke (non-impact) on approach
From Sioux Falls Regional Airport (FSD) to Sioux Falls Regional Airport (FSD)
Event
- NTSB case
- CEN16LA201
- 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
Cessna 402B B
- Aircraft type
- Cessna 402
- 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
- N76MD
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Sioux Falls Regional Airport (FSD), Sioux Falls, SDTo Sioux Falls Regional Airport (FSD), Sioux Falls, SD
- Aircraft age
- About 39 years (built 1977)
- 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
- Approach
- 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
- Fire/smoke (non-impact)
- 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 commercial pilot in the left seat and the airline transport pilot in the right seat were conducting new-hire training for the left-seat pilot. While maneuvering for a practice approach, the pilots noticed the left engine was running rough. The left-seat pilot activated the auxiliary fuel pump, and the roughness resolved temporarily. Shortly thereafter, the left engine tachometer went to zero, and the left-seat pilot noticed flames emitting from the left engine cowling. The pilots declared an emergency, secured the left engine, and landed the airplane uneventfully; the wing structure was damaged by the fire. Examination of the left engine revealed thermal damage to the No. 4 cylinder, consistent with a preexisting crack condition that allowed exhaust gas to erode the cylinder head and resulted in an engine fire.
Probable cause
The failure of the No. 4 cylinder head, which resulted in an engine fire and subsequent damage to the wing structure.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN16LA201
- Event ID
- 20160601X01308
- Case number
- CEN16LA201
- 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. 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: 5c6a2ffa703249acaa250d07dea8e705254faa022f759a9bd625ee0f6c90dfd0; retrieved 2026-09-16T03:26:49.062Z.