# N56529: Ryan Aeronautical ST3KR, registration cancelled 1964-05-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 20, 1964
- Status when cancelled: Valid registration
- Airframe: [Ryan Aeronautical ST3KR](https://openairdocs.org/model/ryan-aeronautical-st3kr) (registry code 7830502)
- Data sheets: [TCDS A-749](https://openairdocs.org/tcds/A-749) (OpenAirDocs)
- Serial number: 1744
- Type of aircraft: Fixed wing single engine
- Certificate issued: May 8, 1964
- Mode S code: A73C3D
- Owner when cancelled: [Castle Air Force Base Aero Club](https://openairdocs.org/faa-owner/CASTLE%20AIR%20FORCE%20BASE%20AERO%20CLUB)
- Location: [Merced, CA](https://openairdocs.org/faa-place/CA/Merced)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N56529
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=56529
- Page: https://openairdocs.org/deregistered/N56529-1964-05-20

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 Ryan Aeronautical ST3KR: https://openairdocs.org/model/ryan-aeronautical-st3kr.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 UNK64X1329](https://openairdocs.org/ntsb/UNK64X1329), Apr 15, 1964: Ryan ST3KR (N56529), Merced, CA, destroyed, 2 fatal

## Other aircraft with N56529

- [Registered now](https://openairdocs.org/aircraft/N56529): Piper PA-34-200, S/N 34-7350346, built 1973

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