# N37561: Douglas DC-6B, registration cancelled 1971-01-19

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 19, 1971
- Status when cancelled: Valid registration
- Airframe: [Douglas DC-6B](https://openairdocs.org/model/douglas-dc-6b) (registry code 3021712)
- Data sheets: [TCDS 6A4](https://openairdocs.org/tcds/6A4) (OpenAirDocs)
- Serial number: 43540
- Type of aircraft: Fixed wing multi engine
- Certificate issued: March 11, 1952
- Mode S code: A449A2
- Owner when cancelled: [Mars Aviation Inc](https://openairdocs.org/faa-owner/MARS%20AVIATION%20INC)
- Location: [San Francisco, CA](https://openairdocs.org/faa-place/CA/San%20Francisco)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N37561
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=37561
- Page: https://openairdocs.org/deregistered/N37561-1971-01-19

From the FAA registry file of November 3, 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 Douglas DC-6B: https://openairdocs.org/model/douglas-dc-6b.md

## Other aircraft with N37561

- [Registered now](https://openairdocs.org/aircraft/N37561): Boeing 737-9, S/N 67590, built 2023
- [Cancelled 1989-07-21](https://openairdocs.org/deregistered/N37561-1989-07-21): Cessna 414A, S/N 414A0007. Triennial form not returned

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