# N4273Y: 2007 Aero SP Z O O AT-4 LSA

- Status: Valid registration
- Airframe: [Aero SP Z O O AT-4 LSA](https://openairdocs.org/model/aero-sp-z-o-o-at-4-lsa) (registry code 060004P, 2 seats)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: AT4-012
- Year built: 2007
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: May 9, 2008
- Certificate issued: December 10, 2025
- Expires: December 31, 2032
- Mode S code: A51878
- Registered owner: [Hunt David](https://openairdocs.org/faa-owner/HUNT%20DAVID)
- Location: [Lake Havasu City, AZ](https://openairdocs.org/faa-place/AZ/Lake%20Havasu%20City)
- Owner type: Individual
- Owner's area on the map: 34.4769° N, 114.3441° W: Placed by OpenAirDocs at the center of ZIP code 86403, 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=4273Y
- Page: https://openairdocs.org/aircraft/N4273Y

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 912ULS model are included.

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

### Matched by airframe (Aero SP Z O O AT-4 LSA)

None in force.

### Matched by engine (Rotax 912ULS series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4273Y.

## FAA accident and incident reports

None matched to N4273Y.

## 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 N4273Y

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4273Y before.

- [Cancelled 2003-12-23](https://openairdocs.org/deregistered/N4273Y-2003-12-23): Raven S55A, S/N S55A-982, built 1983. Triennial form not returned. Owner: [Hartpence Joe K](https://openairdocs.org/faa-owner/HARTPENCE%20JOE%20K), [Yukon, OK](https://openairdocs.org/faa-place/OK/Yukon)

## Related

- Other Aero SP Z O O AT-4 LSA aircraft: https://openairdocs.org/model/aero-sp-z-o-o-at-4-lsa/aircraft.md
- The Rotax 912ULS series engine: https://openairdocs.org/engine/rotax-912uls-series.md

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