# N9728C: Hiller UH-12L4, registration cancelled 1989-07-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 20, 1989
- Status when cancelled: Triennial form not returned
- Airframe: [Hiller UH-12L4](https://openairdocs.org/model/hiller-uh-12l4) (registry code 4360128)
- Data sheets: [TCDS H1WE](https://openairdocs.org/tcds/H1WE) (OpenAirDocs)
- Serial number: 2511
- Type of aircraft: Rotorcraft
- Mode S code: AD8E86
- The mark today: https://openairdocs.org/aircraft/N9728C
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9728C
- Page: https://openairdocs.org/deregistered/N9728C-1989-07-20

From the FAA registry file of November 7, 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 Hiller UH-12L4: https://openairdocs.org/model/hiller-uh-12l4.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 LAX71DUJ15](https://openairdocs.org/ntsb/LAX71DUJ15), Jul 21, 1970: Hiller Acft SL-4 (N9728C), Williams, AZ, substantial damage

## Other aircraft with N9728C

- [Cancelled 2018-01-10](https://openairdocs.org/deregistered/N9728C-2018-01-10): Stinson 108, S/N 108-283. Registration expired, pending cancellation. Owner: [Robinson Ernest Wayne](https://openairdocs.org/faa-owner/ROBINSON%20ERNEST%20WAYNE), [Conway, SC](https://openairdocs.org/faa-place/SC/Conway)

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