# N4606G: Sikorsky S-61N, registration cancelled 1976-12-29

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 29, 1976
- Exported to: United Kingdom
- Status when cancelled: Valid registration
- Airframe: [Sikorsky S-61N](https://openairdocs.org/model/sikorsky-s-61n) (registry code 8142104)
- Data sheets: [TCDS 1H15](https://openairdocs.org/tcds/1H15) (OpenAirDocs)
- Serial number: 61224
- Type of aircraft: Rotorcraft
- Certificate issued: April 30, 1974
- Mode S code: A59CCC
- Owner when cancelled: [Sfo Helicopter Airlines Inc](https://openairdocs.org/faa-owner/SFO%20HELICOPTER%20AIRLINES%20INC)
- Location: [Oakland, CA](https://openairdocs.org/faa-place/CA/Oakland)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N4606G
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4606G
- Page: https://openairdocs.org/deregistered/N4606G-1976-12-29

From the FAA registry file of November 3, 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 Sikorsky S-61N: https://openairdocs.org/model/sikorsky-s-61n.md

## NTSB investigations (3)

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 OAK73IP020](https://openairdocs.org/ntsb/OAK73IP020), Nov 17, 1973: Sikorsky S-61N (N4606G), Oakland, CA, incident, minor damage
- [NTSB OAK67A0043](https://openairdocs.org/ntsb/OAK67A0043), Oct 11, 1966: Sikorsky S-61N (N4606G), Mountain View, CA, substantial damage
- [NTSB OAK66A0054](https://openairdocs.org/ntsb/OAK66A0054), Jun 6, 1966: Sikorsky S-61N (N4606G), San Francisco, CA, substantial damage

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