# N121MX: Sikorsky UH-60A

- Status: Valid registration
- Airframe: [Sikorsky UH-60A](https://openairdocs.org/model/sikorsky-uh-60a) (registry code 8146004, 15 seats)
- Serial number: 83-23839
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Certificate issued: March 12, 2024
- Expires: March 31, 2031
- Mode S code: A05892
- Registered owner: [Ace Aeronautics LLC](https://openairdocs.org/faa-owner/ACE%20AERONAUTICS%20LLC)
- Location: [Guntersville, AL](https://openairdocs.org/faa-place/AL/Guntersville)
- Owner type: LLC
- Owner's area on the map: 34.3413° N, 86.3222° W: Placed by OpenAirDocs at the center of ZIP code 35976, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=121MX
- Page: https://openairdocs.org/aircraft/N121MX

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): 1 in force

### Matched by airframe (Sikorsky UH-60A)

- [AD 2020-22-19](https://openairdocs.org/ad/2020-22-19): Main Rotor Head--Main Rotor Spindle Cuff · ACE Aeronautics UH-60A, BHI H60 (UH-60A), UH-60A and 17 more. Effective Dec 3, 2020

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N121MX.

## FAA accident and incident reports

None matched to N121MX.

## 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 N121MX

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N121MX before.

- [Cancelled 2016-10-26](https://openairdocs.org/deregistered/N121MX-2016-10-26): Cirrus Design SR20, S/N 2304, built 2016. Exported to United Kingdom. Owner: [Wings Aviation Inc Trustee](https://openairdocs.org/faa-owner/WINGS%20AVIATION%20INC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)

## Related

- Other Sikorsky UH-60A aircraft: https://openairdocs.org/model/sikorsky-uh-60a/aircraft.md

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