# N50PX: 2009 Proxy Aviation Systems FIREFLY, registration cancelled 2020-02-03

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 3, 2020
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Proxy Aviation Systems FIREFLY](https://openairdocs.org/model/proxy-aviation-systems-firefly) (registry code 05621YV)
- Engine: [Lycoming TIO-540 series](https://openairdocs.org/engine/lycoming-tio-540-series) (registry code 41569)
- Data sheets: [TCDS E14EA](https://openairdocs.org/tcds/E14EA) (OpenAirDocs)
- Serial number: 003
- Year built: 2009
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, unmanned, research and development, unmanned, market survey
- Airworthiness date: March 25, 2016
- Certificate issued: March 18, 2009
- Last registry action: June 2, 2016
- Mode S code: A638F2
- Owner when cancelled: [Proxy Aviation Systems](https://openairdocs.org/faa-owner/PROXY%20AVIATION%20SYSTEMS)
- Location: [Gaithersburg, MD](https://openairdocs.org/faa-place/MD/Gaithersburg)
- Owner type: Corporation
- Owner's area on the map: 39.1695° N, 77.1623° W: Placed by OpenAirDocs at the center of ZIP code 20879, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N50PX
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=50PX
- Page: https://openairdocs.org/deregistered/N50PX-2020-02-03

From the FAA registry file of November 5, 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 Proxy Aviation Systems FIREFLY: https://openairdocs.org/model/proxy-aviation-systems-firefly.md

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