# N4257U: Lockheed C-121T, registration cancelled 2012-12-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 18, 2012
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Lockheed C-121T](https://openairdocs.org/model/lockheed-c-121t) (registry code 5262140)
- Serial number: 52-3418
- Type of aircraft: Fixed wing multi engine
- Certificate issued: July 2, 1981
- Last registry action: May 19, 2009
- Mode S code: A51192
- Owner when cancelled: [Combat Air Museum Inc](https://openairdocs.org/faa-owner/COMBAT%20AIR%20MUSEUM%20INC)
- Location: [Topeka, KS](https://openairdocs.org/faa-place/KS/Topeka)
- Owner type: Corporation
- Owner's area on the map: 38.9471° N, 95.6902° W: Placed by OpenAirDocs at the center of ZIP code 66619, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4257U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4257U
- Page: https://openairdocs.org/deregistered/N4257U-2012-12-18

From the FAA registry file of November 4, 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 C-121T: https://openairdocs.org/model/lockheed-c-121t.md

## Other aircraft with N4257U

- [Cancelled 1969-06-18](https://openairdocs.org/deregistered/N4257U-1969-06-18): Cessna 150D, S/N 15060257. Owner: [Trenton Aviation Inc](https://openairdocs.org/faa-owner/TRENTON%20AVIATION%20INC), [Trenton, NJ](https://openairdocs.org/faa-place/NJ/Trenton)

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