DEN99LA056 · Aero Commander 200D
Aero Commander 200D · Accident: total loss of engine power (mechanical failure) while maneuvering
From Evanston-Uinta County Airport-Burns Field (EVW) to an unrecorded destination
Event
- NTSB case
- DEN99LA056
- 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
Aero Commander 200D
- Aircraft type
- Aero Commander 200
- 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
- N49J
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Evanston-Uinta County Airport-Burns Field (EVW)To 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
- Maneuvering
- 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
- Total loss of engine power (mechanical 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
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot was conducting a test flight after recent maintenance work had been performed on the engine. A thorough preflight was performed, and no water was found in the fuel. The pilot completed an extended run-up at all throttle positions, including a mock takeoff to a full stop. After an uneventful departure, the nose landing gear light failed to indicate that it was in the up and locked position. The pilot climbed to 10,000 feet and attempted to recycle the landing gear, but was unsuccessful. He over flew the airport to have a ground observer verify the landing gear's position. According to the pilot, 'about that time the engine quit without warning... The engine sputtered a second, then stopped again, with the electric fuel pump [on].' He performed an emergency gear-up landing on the runway. A postaccident engine examination was performed by an FAA inspector, including an inspection of the electrically-driven fuel pump that had recently been replaced. Fuel was present in each of the fuel injector nozzles and no engine discrepancies were observed.
Probable cause
A total loss of engine power for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN99LA056
- Event ID
- 20001205X00311
- Case number
- DEN99LA056
- 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: 6342581d60ca2e59f6d51f7c75346a74a5f63ecbf8a59c43493aa5f388a4ca93; retrieved 2026-09-22T15:42:07.221Z.