# N3937: 1971 Semco Balloon CHALLENGER, registration cancelled 2018-04-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 5, 2018
- Status when cancelled: Revoked, canceled
- Airframe: [Semco Balloon CHALLENGER](https://openairdocs.org/model/semco-balloon-challenger) (registry code 8070802)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Data sheets: [TCDS A13SO](https://openairdocs.org/tcds/A13SO) (OpenAirDocs)
- Serial number: SEM52
- Year built: 1971
- Type of aircraft: Balloon
- Airworthiness: Experimental, amateur built
- Last registry action: April 23, 1977
- Mode S code: A4913B
- Owner when cancelled: [Your Standard Balloon Works Ltd](https://openairdocs.org/faa-owner/YOUR%20STANDARD%20BALLOON%20WORKS%20LTD)
- Location: [Chicago, IL](https://openairdocs.org/faa-place/IL/Chicago)
- Owner type: Corporation
- Owner's area on the map: 41.7003° N, 87.6633° W: Placed by OpenAirDocs at the center of ZIP code 60643, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N3937
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3937
- Page: https://openairdocs.org/deregistered/N3937-2018-04-05

From the FAA registry file of November 7, 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 Semco Balloon CHALLENGER: https://openairdocs.org/model/semco-balloon-challenger.md

## Other aircraft with N3937

- [Cancelled 1930-07-10](https://openairdocs.org/deregistered/N3937-1930-07-10): Curtiss JN4D, S/N 432, built 1918. Owner: [Carroll George W Jr](https://openairdocs.org/faa-owner/CARROLL%20GEORGE%20W%20JR), [Beaumont, TX](https://openairdocs.org/faa-place/TX/Beaumont)

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