# N28ST: Learjet 23, registration cancelled 1989-11-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 20, 1989
- Status when cancelled: Triennial form not returned
- Airframe: [Learjet 23](https://openairdocs.org/model/learjet-23) (registry code 5170102)
- Data sheets: [TCDS A5CE](https://openairdocs.org/tcds/A5CE) (OpenAirDocs)
- Serial number: 23013
- Type of aircraft: Fixed wing multi engine
- Mode S code: A2CD44
- The mark today: https://openairdocs.org/aircraft/N28ST
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=28ST
- Page: https://openairdocs.org/deregistered/N28ST-1989-11-20

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 Learjet 23: https://openairdocs.org/model/learjet-23.md

## Other aircraft with N28ST

- [Registered now](https://openairdocs.org/aircraft/N28ST): Piper PA-28-181, S/N 28020129, built 2023

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