# N599SX: 2020 Marlette Bobby F SONEX

- Status: Valid registration
- Airframe: [Marlette Bobby F SONEX](https://openairdocs.org/model/marlette-bobby-f-sonex) (registry code 05639P2, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 0620
- Year built: 2020
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex Aircraft LLC SONEX
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 27, 2021
- Certificate issued: October 7, 2020
- Expires: October 31, 2027
- Mode S code: A7C07C
- Registered owner: [Marlette Bobby F](https://openairdocs.org/faa-owner/MARLETTE%20BOBBY%20F)
- Location: [Coeur D Alene, ID](https://openairdocs.org/faa-place/ID/Coeur%20D%20Alene)
- Owner type: Individual
- Owner's area on the map: 47.7253° N, 116.7898° W: Placed by OpenAirDocs at the center of ZIP code 83815, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=599SX
- Page: https://openairdocs.org/aircraft/N599SX

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Marlette Bobby F SONEX)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N599SX.

## FAA accident and incident reports

None matched to N599SX.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Marlette Bobby F SONEX aircraft: https://openairdocs.org/model/marlette-bobby-f-sonex/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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