# Accident 20050806018539A: Scwzer G164, Marshalltown, IA, August 6, 2005

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 6, 2005, 19:00 local time
- Place: Marshalltown, IA
- Airport: Marshalltown Municipal Airport
- Damage: Destroyed
- Phase of flight: Forced/Precautionary Landing
- Operating rules: Agricultural (Part 137)
- Operator: WFOG
- Location: 42.1056° N, 92.9011° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=42.1056&lon=-92.9011&mi=10
- Aircraft: N636U, a cancelled registration (https://openairdocs.org/deregistered/N636U-2017-03-24) (OpenAirDocs)
- Registry model: Grumman G-164 (registry code 3952702, https://openairdocs.org/model/grumman-g-164) (OpenAirDocs)
- Registry engine: Pratt & Whitney R-985 series (registry code 52008, https://openairdocs.org/engine/pratt-whitney-r-985-series) (OpenAirDocs)
- Reported make and model: SCWZER G164
- Reported engine: PWA R985AN14B
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 5,839 total, 800 in this make and model, 220 in the last 90 days
- NTSB investigation: [NTSB CHI05LA214](https://openairdocs.org/ntsb/CHI05LA214) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20050806018539A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) AERIAL APPLICATION AIRCRAFT WITH FULL FUEL TANKS AND 115 GALLONS OF LIQUID INSECTICIDE ONBOARD DEPARTED MIW AIRPORT. ENGINE BEGAN TO RUN ROUGH AND BACKFIRE DURING TAKEOFF OVER THE DEPARTURE END OF THE RUNWAY. LOAD OF LIQUID CHEMICAL INSECTICIDE WAS PARTIALLY DUMPED. EMERGENCY LANDING IN A CORNFIELD WAS EXECUTED. AIRCRAFT CRASHED AND WAS DESTROYED IN A POST-CRASH FIRE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI05LA214](https://openairdocs.org/ntsb/CHI05LA214), Aug 7, 2005: Grumman G-164 (N636U), Marshalltown, IA, substantial damage. Probable cause: The loss of engine power for an undetermined reason. A factor was the corn crop.

## Other reports on N636U (2)

Matched to the same aircraft by N-number and date.

- [Accident 19780501008129A](https://openairdocs.org/incident/19780501008129A), May 1, 1978: Scwzer G164A (N636U), Baytown, TX, Substantial damage. Forced landing, undetermined engine failure. Wing struck auto parked on strip.
- [Accident 19760823026339A](https://openairdocs.org/incident/19760823026339A), Aug 23, 1976: Grumav G164 (N636U), Stuttgart, AR, Substantial damage. Nr 2 cyl failed at base.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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