# N339: Lockheed 18-56, registration cancelled 1967-06-16

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 16, 1967
- Status when cancelled: Valid registration
- Airframe: [Lockheed 18-56](https://openairdocs.org/model/lockheed-18-56) (registry code 5261642)
- Serial number: 2588
- Type of aircraft: Fixed wing multi engine
- Certificate issued: July 11, 1951
- Mode S code: A3B73D
- Owner when cancelled: [National Steel Corp](https://openairdocs.org/faa-owner/NATIONAL%20STEEL%20CORP)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N339
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=339
- Page: https://openairdocs.org/deregistered/N339-1967-06-16

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 Lockheed 18-56: https://openairdocs.org/model/lockheed-18-56.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 CHI67A0065](https://openairdocs.org/ntsb/CHI67A0065), Nov 17, 1966: Lockheed L-18 (N339), Chicago, IL, substantial damage

## Other aircraft with N339

- [Cancelled 2015-05-13](https://openairdocs.org/deregistered/N339-2015-05-13): Lockheed 18-56, S/N 2548, built 1943. Registration expired, pending cancellation. Owner: [May Air Xpress Inc](https://openairdocs.org/faa-owner/MAY%20AIR%20XPRESS%20INC), [New Boston, TX](https://openairdocs.org/faa-place/TX/New%20Boston)
- [Cancelled 1947-01-28](https://openairdocs.org/deregistered/N339-1947-01-28): North American SNJ-4, S/N 11212. Owner: [Civil Aeronautics Administration](https://openairdocs.org/faa-owner/CIVIL%20AERONAUTICS%20ADMINISTRATION), [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)

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