# N7576A: 2004 North Wing Design AST 503B

- Status: Valid registration
- Airframe: [North Wing Design AST 503B](https://openairdocs.org/model/north-wing-design-ast-503b) (registry code 05903F9, 2 seats)
- Engine: [Rotax 503 series](https://openairdocs.org/engine/rotax-503-series) (registry code 55564)
- Serial number: 4918
- Year built: 2004
- Type: Weight-shift-control
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: January 20, 2008
- Certificate issued: September 10, 2007
- Expires: August 31, 2028
- Mode S code: AA3735
- Registered owner: [Szajnert Carlos](https://openairdocs.org/faa-owner/SZAJNERT%20CARLOS)
- Location: [Miramar, FL](https://openairdocs.org/faa-place/FL/Miramar)
- Owner type: Individual
- Owner's area on the map: 25.9881° N, 80.3404° W: Placed by OpenAirDocs at the center of ZIP code 33027, 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=7576A
- Page: https://openairdocs.org/aircraft/N7576A

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. The registry lists only the engine series, so ADs for every Rotax 503 model are included.

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

### Matched by airframe (North Wing Design AST 503B)

None in force.

### Matched by engine (Rotax 503 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N7576A.

## FAA accident and incident reports

None matched to N7576A.

## 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.

## Earlier aircraft with N7576A

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N7576A before.

- [Cancelled 1982-02-04](https://openairdocs.org/deregistered/N7576A-1982-02-04): Boeing 707-123B, S/N 19326, built 1966. Sale reported. Owner: [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)

## Related

- Other North Wing Design AST 503B aircraft: https://openairdocs.org/model/north-wing-design-ast-503b/aircraft.md
- The Rotax 503 series engine: https://openairdocs.org/engine/rotax-503-series.md

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