# N866: Sikorsky S-58C, registration cancelled 1975-12-24

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 24, 1975
- Status when cancelled: Valid registration
- Airframe: [Sikorsky S-58C](https://openairdocs.org/model/sikorsky-s-58c) (registry code 8141806)
- Data sheets: [TCDS 1H11](https://openairdocs.org/tcds/1H11) (OpenAirDocs)
- Serial number: 58519
- Type of aircraft: Rotorcraft
- Certificate issued: November 3, 1971
- Mode S code: ABE520
- Owner when cancelled: [Chicago Helicopter Industries Inc](https://openairdocs.org/faa-owner/CHICAGO%20HELICOPTER%20INDUSTRIES%20INC)
- Location: [Chicago, IL](https://openairdocs.org/faa-place/IL/Chicago)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N866
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=866
- Page: https://openairdocs.org/deregistered/N866-1975-12-24

From the FAA registry file of October 31, 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-58C: https://openairdocs.org/model/sikorsky-s-58c.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 CHI66A0101](https://openairdocs.org/ntsb/CHI66A0101), Jun 20, 1966: Sikorsky S58C (N866), Gary, IN, destroyed

## Other aircraft with N866

- [Cancelled 1931-08-18](https://openairdocs.org/deregistered/N866-1931-08-18): Ryan B1, S/N 35, built 1927. Owner: [Robertson Airplane Service Co](https://openairdocs.org/faa-owner/ROBERTSON%20AIRPLANE%20SERVICE%20CO), [Robertson, MO](https://openairdocs.org/faa-place/MO/Robertson)

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