# N439ML: 1979 Aero Vodochody L-39ZO

- Status: Valid registration
- Airframe: [Aero Vodochody L-39ZO](https://openairdocs.org/model/aero-vodochody-l-39zo) (registry code 05623NM, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 731020
- Year built: 1979
- Type: Fixed wing single engine
- Engine type: Turbo-fan
- Airworthiness: Experimental, exhibition
- Airworthiness date: December 5, 2025
- Certificate issued: November 27, 2023
- Expires: November 30, 2030
- Mode S code: A545AB
- Registered owner: [East Boulder LLC](https://openairdocs.org/faa-owner/EAST%20BOULDER%20LLC)
- Location: [Mc Leod, MT](https://openairdocs.org/faa-place/MT/Mc%20Leod)
- Owner type: LLC
- Owner's area on the map: 45.3456° N, 110.1382° W: Placed by OpenAirDocs at the center of ZIP code 59052, 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=439ML
- Page: https://openairdocs.org/aircraft/N439ML

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 (Aero Vodochody L-39ZO)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N439ML.

## FAA accident and incident reports

None matched to N439ML.

## 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 Aero Vodochody L-39ZO aircraft: https://openairdocs.org/model/aero-vodochody-l-39zo/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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