# N4057K: 1980 Balloon Works FIREFLY 7, registration cancelled 2014-12-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 18, 2014
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Balloon Works FIREFLY 7](https://openairdocs.org/model/balloon-works-firefly-7) (registry code 1050100)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS A14SO](https://openairdocs.org/tcds/A14SO) (OpenAirDocs)
- Serial number: 10114
- Year built: 1980
- Type of aircraft: Balloon
- Engine type: None
- Airworthiness: Standard, balloon
- Airworthiness date: May 26, 1980
- Certificate issued: December 8, 1984
- Last registry action: March 23, 1991
- Mode S code: A4C28B
- Owner when cancelled: [Sperry Wayne S](https://openairdocs.org/faa-owner/SPERRY%20WAYNE%20S)
- Location: [Three Rivers, MI](https://openairdocs.org/faa-place/MI/Three%20Rivers)
- Owner type: Individual
- Owner's area on the map: 41.9757° N, 85.6470° W: Placed by OpenAirDocs at the center of ZIP code 49093, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4057K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4057K
- Page: https://openairdocs.org/deregistered/N4057K-2014-12-18

From the FAA registry file of October 31, 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 Balloon Works FIREFLY 7: https://openairdocs.org/model/balloon-works-firefly-7.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 CHI83LA134](https://openairdocs.org/ntsb/CHI83LA134), Mar 12, 1983: Balloon Works Firefly AX-7 (N4057K), Augusta, MI, substantial damage

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