# N139TR: 1999 AS+ AC 4

- Status: Valid registration
- Airframe: [AS+ AC 4](https://openairdocs.org/model/as-plus-ac-4) (registry code 05628R1, 1 seats)
- Serial number: 39
- Year built: 1999
- Type: Glider
- Engine type: None
- Airworthiness: Experimental, racing, exhibition
- Airworthiness date: October 14, 1999
- Certificate issued: October 17, 2025
- Expires: October 31, 2032
- Mode S code: A09E59
- Registered owner: [Huntsville Soaring Association](https://openairdocs.org/faa-owner/HUNTSVILLE%20SOARING%20ASSOCIATION)
- Location: [Brownsboro, AL](https://openairdocs.org/faa-place/AL/Brownsboro)
- Owner type: Corporation
- Owner's area on the map: 34.7294° N, 86.4631° W: Placed by OpenAirDocs at the center of ZIP code 35741, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=139TR
- Page: https://openairdocs.org/aircraft/N139TR

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 (AS+ AC 4)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N139TR.

## FAA accident and incident reports

None matched to N139TR.

## 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 AS+ AC 4 aircraft: https://openairdocs.org/model/as-plus-ac-4/aircraft.md

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