CEN18LA284 · Toomey Quickie
Toomey Quickie · Accident: loss of engine power (partial) en route
From Zanesville Municipal Airport (ZZV) to Zanesville Municipal Airport (ZZV)
Event
- NTSB case
- CEN18LA284
- 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
Toomey Quickie
- Aircraft type
- Toomey QUICKIE
- 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
- N23JH
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Zanesville Municipal Airport (ZZV), Zanesville, OHTo Zanesville Municipal Airport (ZZV), Zanesville, OH
- Aircraft age
- About 5 years (built 2013)
- 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
- En route
- 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
- Aircraft › Aircraft power plant
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The commercial pilot departed in the experimental, amateur-built airplane for a local photography flight. During the return flight, the engine power dropped more than 1,000 rpm, and the engine monitor indicated about twice the normal fuel flow. The pilot was initially able to maintain airspeed and altitude; however, the rpm subsequently began to decrease further, and the pilot determined that the airplane would not be able to reach the airport. During the subsequent forced landing in a cornfield, the airplane's nose struck the ground, and the airplane then nosed over.
Examination of the wreckage revealed a separation of the right exhaust manifold, which was directly beneath the intake breather for the engine. Additionally, a mixture set screw on the carburetor was found loose and extended out, both of which would have resulted in a loss of rpm. Although the weather conditions were conducive to carburetor icing at descent power, the failed exhaust manifold and loose mixture screw likely led to the loss of engine power.
Probable cause
The failure of the exhaust manifold and a loose mixture screw, which resulted in a partial loss of engine power.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN18LA284
- Event ID
- 20180720X31334
- Case number
- CEN18LA284
- 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, coordinates. 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: fb24c3c351599dd8085a40ddc5c23cda54d10d443819ea62dc5056d5e03a0261; retrieved 2026-09-16T07:55:57.725Z.