# N21: 1929 Boeing 100, registration cancelled 1931-03-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 10, 1931
- Status when cancelled: Valid registration
- Airframe: [Boeing 100](https://openairdocs.org/model/boeing-100) (registry code 1381902)
- Data sheets: [TCDS ATC 133](https://openairdocs.org/tcds/ATC%20133) (OpenAirDocs)
- Serial number: 1142
- Year built: 1929
- Type of aircraft: Fixed wing single engine
- Mode S code: A1B728
- Owner when cancelled: [U S Dept Of Commerce](https://openairdocs.org/faa-owner/U%20S%20DEPT%20OF%20COMMERCE)
- Location: [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)
- Owner type: Government
- Owner's area on the map: 38.9104° N, 77.0177° W: Placed by OpenAirDocs at the center of ZIP code 20001, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N21
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21
- Page: https://openairdocs.org/deregistered/N21-1931-03-10

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 Boeing 100: https://openairdocs.org/model/boeing-100.md

## Other aircraft with N21

- [Cancelled 1947-03-12](https://openairdocs.org/deregistered/N21-1947-03-12): Fairchild 24 G, S/N 2924, built 1937. Owner: [Civil Aeronautics Authority](https://openairdocs.org/faa-owner/CIVIL%20AERONAUTICS%20AUTHORITY), [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.