# N5SX: 1996 Fonville John C SWEARINGEN SX300, registration cancelled 2023-01-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 14, 2023
- Status when cancelled: Registration pending, canceled
- Airframe: [Fonville John C SWEARINGEN SX300](https://openairdocs.org/model/fonville-john-c-swearingen-sx300) (registry code 05604AI)
- Engine: [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series) (registry code 41530)
- Data sheets: [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Serial number: FYP-040
- Year built: 1996
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: December 11, 1996
- Last registry action: September 23, 2021
- Mode S code: A636E4
- Location: [Litchfield Park, AZ](https://openairdocs.org/faa-place/AZ/Litchfield%20Park)
- Owner type: Individual
- Owner's area on the map: 33.5162° N, 112.4236° W: Placed by OpenAirDocs at the center of ZIP code 85340, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5SX
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5SX
- Page: https://openairdocs.org/deregistered/N5SX-2023-01-14

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 Fonville John C SWEARINGEN SX300: https://openairdocs.org/model/fonville-john-c-swearingen-sx300.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 WPR21LA357](https://openairdocs.org/ntsb/WPR21LA357), Sep 18, 2021: Fonville Swearingen SX300 (N5SX), Buckeye, AZ, substantial damage. Probable cause: The total loss of engine power due to the failure of the left magneto.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20210918015889A](https://openairdocs.org/incident/20210918015889A), Sep 18, 2021: Fonville John C SWEARINGEN SX300 (N5SX), Buckeye, AZ, Substantial damage. On Saturday, 09/18/2021, at approximately 0824 MST, a swearingen SX300, N5SX, serial number FYP-040, experienced engine failure in flight and crashed landed…
- [Incident 19981127039749I](https://openairdocs.org/incident/19981127039749I), Nov 27, 1998: Amtres SX300 (N5SX), St Louis, MO, Minor damage. (-5)On 11-27-98 Mr. Fonville was enroute from ft. worth, TX to st. clair, M0. When Mr. Fonville selected the landing gear down for landing at st. clar MO. He…

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