# N581B: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 1
- Last cancelled: July 30, 2026
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=581B
- Page: https://openairdocs.org/aircraft/N581B

## Aircraft that carried N581B

- [Cancelled 2026-07-30](https://openairdocs.org/deregistered/N581B-2026-07-30): Beech C90A, S/N LJ-1170, built 1988. Exported to Brazil. Owner: [Montana Aircraft Trust Inc Trustee](https://openairdocs.org/faa-owner/MONTANA%20AIRCRAFT%20TRUST%20INC%20TRUSTEE), [Bozeman, MT](https://openairdocs.org/faa-place/MT/Bozeman)

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