# N6669Q: 1977 Grumman Acft ENG Cor-Schweizer G-164B, registration cancelled 2009-03-24

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 24, 2009
- Status when cancelled: Triennial form not returned
- Airframe: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS 1A16](https://openairdocs.org/tcds/1A16) (OpenAirDocs)
- Serial number: 191B
- Year built: 1977
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: January 28, 1977
- Certificate issued: March 2, 1988
- Last registry action: February 17, 2009
- Mode S code: A8CE25
- Owner when cancelled: [Morgan Boyd J](https://openairdocs.org/faa-owner/MORGAN%20BOYD%20J)
- Location: [Belgrade, MT](https://openairdocs.org/faa-place/MT/Belgrade)
- Owner type: Individual
- Owner's area on the map: 45.9725° N, 111.1347° W: Placed by OpenAirDocs at the center of ZIP code 59714, within about 12 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N6669Q
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6669Q
- Page: https://openairdocs.org/deregistered/N6669Q-2009-03-24

From the FAA registry file of November 5, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Grumman Acft ENG Cor-Schweizer G-164B: https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b.md

## NTSB investigations (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 SEA95LA119](https://openairdocs.org/ntsb/SEA95LA119), Jun 15, 1995: Grumman G-164B (N6669Q), Helena, MT, destroyed. Probable cause: THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS.

## FAA accident and incident reports (1)

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.

- [Accident 19950615045439A](https://openairdocs.org/incident/19950615045439A), Jun 15, 1995: Scwzer G164B (N6669Q), Helena, MT, Destroyed. Lost power on spray turn around. Impacted and burned. 400 hrs on engine tbo. Cylinder head prior crack. Oil lost.

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