# N104SD: Hughes TH-55A, registration cancelled

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: date not recorded
- Status when cancelled: Triennial form not returned
- Airframe: [Hughes TH-55A](https://openairdocs.org/model/hughes-th-55a) (registry code 4471004)
- Data sheets: [TCDS 4H12](https://openairdocs.org/tcds/4H12) (OpenAirDocs)
- Serial number: 660571
- Type of aircraft: Rotorcraft
- Mode S code: A01524
- The mark today: https://openairdocs.org/aircraft/N104SD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=104SD
- Page: https://openairdocs.org/deregistered/N104SD-undated

From the FAA registry file of October 29, 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 Hughes TH-55A: https://openairdocs.org/model/hughes-th-55a.md

## Other aircraft with N104SD

- [Cancelled 2022-01-08](https://openairdocs.org/deregistered/N104SD-2022-01-08): Space Dynamics Laboratory DAKOTA, S/N 15. Registration expired, pending cancellation. Owner: [Space Dynamics Laboratory](https://openairdocs.org/faa-owner/SPACE%20DYNAMICS%20LABORATORY), [North Logan, UT](https://openairdocs.org/faa-place/UT/North%20Logan)
- [Cancelled 2011-11-21](https://openairdocs.org/deregistered/N104SD-2011-11-21): Bell UH-1H, S/N 68-15566. Exported to Colombia. Owner: [US Department Of State Inl/A](https://openairdocs.org/faa-owner/US%20DEPARTMENT%20OF%20STATE%20INL%2FA), [Patrick Afb, FL](https://openairdocs.org/faa-place/FL/Patrick%20Afb)

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