# Accident 20120719016069A: Grumman G-164A, Wheaton, MN, July 19, 2012

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 19, 2012, 13:45 local time
- Place: Wheaton, MN
- Damage: Substantial damage
- Phase of flight: Other, Specify
- Operating rules: Agricultural (Part 137)
- Operator: R4LG
- Location: 46.2839° N, 96.1539° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=46.2839&lon=-96.1539&mi=10
- Aircraft: N4638, a cancelled registration (https://openairdocs.org/deregistered/N4638-2015-05-13) (OpenAirDocs)
- Registry model: Grumman G-164A (registry code 3952704, https://openairdocs.org/model/grumman-g-164a) (OpenAirDocs)
- Registry engine: Pratt & Whitney R1340 series (registry code 52016, https://openairdocs.org/engine/pratt-whitney-r1340-series) (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Reported engine: P&W R
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot
- Pilot flight hours: 1,723 total, 650 in this make and model, 120 in the last 90 days
- NTSB investigation: [NTSB CEN12LA491](https://openairdocs.org/ntsb/CEN12LA491) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20120719016069A

## Narrative

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

PILOT WAS SPRAYING CORN WHEN HE SAW A PUFF OF SMOKE FROM THE ENGINE.  HE CEASED SPRAYING AND GAINED ALTITUDE TO ASSESS THE SITUATION.  HE THEN WITNESSED ADDITIONAL PUFFS OF SMOKE FORM THE ENGINE AND BEGAN LOSING MANIFOLD PRESSURE.HE DUMPED HIS CHEMICAL LOAD AND MADE AN EMERGENCY LANDING IN THE CORN, SUBSEQUENTLY FLIPPING THE AIRCRAFT OVER (TAIL OVER NOSE).

## 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 CEN12LA491](https://openairdocs.org/ntsb/CEN12LA491), Jul 20, 2012: Grumman G-164A (N4638), Fergus Falls, MN, substantial damage. Probable cause: A total loss of engine power due to a cracked No. 2 cylinder head.

## Other reports on N4638 (3)

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

- [Accident 19840701029009A](https://openairdocs.org/incident/19840701029009A), Jul 1, 1984: Scwzer G164A (N4638), Wyndmere, ND, Substantial damage. Spray boom caught in wheat on edge of runway. Pulled aircraft off runway. Aborted and nosed over in a bean field.
- [Incident 19830831067649I](https://openairdocs.org/incident/19830831067649I), Aug 31, 1983: Scwzer G164A (N4638), Graham, MO, Minor damage. Unable to develop full power. Dumped spray load. Landed in field. Aircraft nosed over. Propeller blade faulty.
- [Accident 19770721019729A](https://openairdocs.org/incident/19770721019729A), Jul 21, 1977: Grumav G164A (N4638), Keo, AR, Substantial damage. Nr 8 cyl failed.

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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