# N399Y: Grumman G-164, registration cancelled 1971-06-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 25, 1971
- Status when cancelled: Valid registration
- Airframe: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702)
- Data sheets: [TCDS 1A16](https://openairdocs.org/tcds/1A16) (OpenAirDocs)
- Serial number: 211
- Type of aircraft: Fixed wing single engine
- Certificate issued: July 9, 1963
- Mode S code: A4A65E
- Owner when cancelled: [Southern Water Co Of Puerto Rico Inc](https://openairdocs.org/faa-owner/SOUTHERN%20WATER%20CO%20OF%20PUERTO%20RICO%20INC)
- Location: Mercedita, RQ
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N399Y
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=399Y
- Page: https://openairdocs.org/deregistered/N399Y-1971-06-25

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 (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 MIA71FKA12](https://openairdocs.org/ntsb/MIA71FKA12), Jun 22, 1971: Grumman G-164 (N399Y), Ponce, PR, destroyed, 1 fatal

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