Air Exec Cessna 402 B accident
Cessna 402 B · Accident: loss of engine power (partial) during takeoff
From Kirksville Regional Airport (IRK) to St. Louis Lambert International Airport (STL)
Event
- NTSB case
- CEN20LA149
- 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
- Charter & commuter
- 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 402 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
- N98649
- Operator
- Air Exec
- Onboard fatalities
- Unknown
- Route
- From Kirksville Regional Airport (IRK), Kirksville, MOTo St. Louis Lambert International Airport (STL), St Louis, MO
- Aircraft age
- About 43 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 135: Air Taxi & Commuter
- 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
- Takeoff
- 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
- Not determined › Not determined
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot reported that he had just taken off and retracted the landing gear when the airplane experienced a substantial loss in engine power. He retarded the throttles to idle and landed the airplane on the remaining runway without lowering the landing gear, resulting in substantial damage to the rear spar caps. Both propellers were found in a feathered position although the pilot said he did not feather them. It is unlikely that the propellers feathered on their own, as the propeller control levers must be placed in the feathered position to feather them; however it could not be determined when the propellers were feathered. Postaccident examination revealed a small amount of water in the fuel selector sump bowl and left auxiliary tank sump bowls but not elsewhere in the fuel system. Thus, it is unlikely that the water found would have affected the performance of the engine. Subsequent engine runs on each engine using the same fuel that was onboard the airplane at the time of the accident revealed no anomalies and normal propellers cycles. No reason for a partial loss of engine power on either or both engines could be determined based on available evidence.
Probable cause
A loss of engine power after takeoff for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN20LA149
- Event ID
- 20200417X12227
- Case number
- CEN20LA149
- 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: local date, investigation status, coordinates, cause areas. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 2020-04-14.
- API snapshot SHA-256: a05055f2711f4ebc641d5c1513e63d602270968b97e6556d0904db6b56973393; retrieved 2026-09-16T11:28:17.094Z.