CEN12LA675 · Beech E33
All Seasons Window Cleaning Beech E33 · Accident: loss of engine power (total) on approach
From Greeley–Weld County Airport (GXY) to Greeley–Weld County Airport (GXY)
Event
- NTSB case
- CEN12LA675
- 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
Beech E33
- Aircraft type
- Beechcraft 33
- 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
- N7133N
- Operator
- All Seasons Window Cleaning
- Onboard fatalities
- Unknown
- Route
- From Greeley–Weld County Airport (GXY), Greeley, COTo Greeley–Weld County Airport (GXY), Greeley, CO
- 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
- Approach · VFR pattern downwind
- 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 (total)
- 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 as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Before the flight, a mechanic assisted the pilot with adjusting the engine mixture settings during several engine starts and run-ups. The pilot was satisfied with the adjustments and proceeded with the local test flight. Witnesses reported observing the airplane climb out normally and then start to circle the airport. The airplane then descended toward the airport as the pilot declared an emergency due to engine problems. The pilot landed the airplane in a plowed field with the gear up, which resulted in substantial damage to the airplane. Postaccident examination of the engine did not reveal any anomalies that may have contributed to the reported loss of power. Additionally, the slave propeller was replaced, and the engine was test run on the airframe up to full power with no anomalies noted except for slight fuel flow indicator fluctuations.
Probable cause
The loss of engine power for reasons that could not be determined during postaccident examinations and testing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN12LA675
- Event ID
- 20121023X13343
- Case number
- CEN12LA675
- 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: 86f42bb5ccac8abac325d7a381512832ed96a9ec0c38cbd86475cb2d0af4a7c1; retrieved 2026-09-15T20:15:36.756Z.