# N4031: B F Mahoney RYAN B1, registration cancelled 1930-02-28

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 28, 1930
- Status when cancelled: Valid registration
- Airframe: [B F Mahoney RYAN B1](https://openairdocs.org/model/b-f-mahoney-ryan-b1) (registry code 05636A1)
- Serial number: 62
- Type of aircraft: Fixed wing single engine
- Mode S code: A4BA41
- Owner when cancelled: [Markle H C](https://openairdocs.org/faa-owner/MARKLE%20H%20C)
- Location: [Wauwatosa, WI](https://openairdocs.org/faa-place/WI/Wauwatosa)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N4031
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4031
- Page: https://openairdocs.org/deregistered/N4031-1930-02-28

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 B F Mahoney RYAN B1: https://openairdocs.org/model/b-f-mahoney-ryan-b1.md

## Other aircraft with N4031

- [Registered now](https://openairdocs.org/aircraft/N4031): Cirrus Design SR22, S/N 5025, built 2021

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