# N504PM: 2023 Adam W Sheffield S18-180 AGGRESSOR

- Status: Valid registration
- Airframe: [Adam W Sheffield S18-180 AGGRESSOR](https://openairdocs.org/model/adam-w-sheffield-s18-180-aggressor) (registry code 05641U4, 2 seats)
- Engine: [Aerosport IO-375M1S](https://openairdocs.org/engine/aerosport-io-375m1s) (registry code 01325)
- Serial number: 2023-101
- Year built: 2023
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Dakota Cub Aircraft S18-180 AGGRESSOR
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 2, 2024
- Certificate issued: June 12, 2023
- Expires: June 30, 2030
- Mode S code: A64A1D
- Registered owner: [Sheffield Adam W](https://openairdocs.org/faa-owner/SHEFFIELD%20ADAM%20W)
- Location: [Fredericksburg, TX](https://openairdocs.org/faa-place/TX/Fredericksburg)
- Owner type: Individual
- Owner's area on the map: 30.2918° N, 98.8709° W: Placed by OpenAirDocs at the center of ZIP code 78624, within about 15 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=504PM
- Page: https://openairdocs.org/aircraft/N504PM

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 (Adam W Sheffield S18-180 AGGRESSOR)

None in force.

### Matched by engine (Aerosport IO-375M1S)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N504PM.

## FAA accident and incident reports

None matched to N504PM.

## 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 Adam W Sheffield S18-180 AGGRESSOR aircraft: https://openairdocs.org/model/adam-w-sheffield-s18-180-aggressor/aircraft.md
- The Aerosport IO-375M1S engine: https://openairdocs.org/engine/aerosport-io-375m1s.md

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