# N603U: 1965 Grumman G-164, registration cancelled 1976-06-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 25, 1976
- Status when cancelled: Sale reported
- Airframe: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702)
- Engine: [Jacobs R755A series](https://openairdocs.org/engine/jacobs-r755a-series) (registry code 35006)
- Data sheets: [TCDS 1A16](https://openairdocs.org/tcds/1A16), [TCDS E-237](https://openairdocs.org/tcds/E-237) (OpenAirDocs)
- Serial number: 332
- Year built: 1965
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Last registry action: January 14, 1977
- Mode S code: A7D426
- Location: [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City)
- Owner type: Corporation
- Owner's area on the map: 35.4676° N, 97.5164° W: Placed by OpenAirDocs: center of Oklahoma City, OK, within about 14 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N603U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=603U
- Page: https://openairdocs.org/deregistered/N603U-1976-06-25

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 G-164: https://openairdocs.org/model/grumman-g-164.md

## NTSB investigations (2)

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 FTW69D0056](https://openairdocs.org/ntsb/FTW69D0056-201082), Jun 17, 1968: Grumman G-164 (N603U), Dierks, AR, substantial damage
- [NTSB FTW68F0078](https://openairdocs.org/ntsb/FTW68F0078), Jun 8, 1967: Grumman G-164 (N603U), Manvel, TX, substantial damage

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