# N1904M: Douglas DC-6, registration cancelled 1971-12-27

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 27, 1971
- Status when cancelled: Valid registration
- Airframe: [Douglas DC-6](https://openairdocs.org/model/douglas-dc-6) (registry code 3021702)
- Data sheets: [TCDS A-781](https://openairdocs.org/tcds/A-781) (OpenAirDocs)
- Serial number: 42898
- Type of aircraft: Fixed wing multi engine
- Mode S code: A16B1B
- Owner when cancelled: [Aero Tech Inc](https://openairdocs.org/faa-owner/AERO%20TECH%20INC)
- Location: [Tucson, AZ](https://openairdocs.org/faa-place/AZ/Tucson)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N1904M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=1904M
- Page: https://openairdocs.org/deregistered/N1904M-1971-12-27

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 Douglas DC-6: https://openairdocs.org/model/douglas-dc-6.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 MIA66A0101](https://openairdocs.org/ntsb/MIA66A0101), Mar 3, 1966: Douglas DC-6 (N1904M), Birmingham, AL, substantial damage

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