# N7721Z: North American AT-6G

- Status: Valid registration
- Airframe: [North American AT-6G](https://openairdocs.org/model/north-american-at-6g) (registry code 6400434, 2 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: SA068
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: April 28, 1995
- Certificate issued: June 28, 1995
- Expires: August 31, 2027
- Mode S code: AA7308
- Registered owner: [Medical Diagnostic Imaging Inc](https://openairdocs.org/faa-owner/MEDICAL%20DIAGNOSTIC%20IMAGING%20INC)
- Location: [Sacramento, CA](https://openairdocs.org/faa-place/CA/Sacramento)
- Owner type: Corporation
- Owner's area on the map: 38.5919° N, 121.4085° W: Placed by OpenAirDocs at the center of ZIP code 95825, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7721Z
- Page: https://openairdocs.org/aircraft/N7721Z

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 Pratt & Whitney R1340 model are included.

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

### Matched by airframe (North American AT-6G)

None in force.

### Matched by engine (Pratt & Whitney R1340 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N7721Z.

## NTSB investigations on N7721Z not matched to an aircraft (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW73DRG15](https://openairdocs.org/ntsb/FTW73DRG15), Aug 30, 1972: Piper PA-25 (N7721Z), Port Lavaca, TX, destroyed

## FAA accident and incident reports

None matched to N7721Z.

## 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 N7721Z

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N7721Z before.

- [Cancelled 1971-06-25](https://openairdocs.org/deregistered/N7721Z-1971-06-25): Piper PA-25-235, S/N 25-3888, built 1966. Owner: [Douglass Jimmy C/DBA Douglass Flying Service](https://openairdocs.org/faa-owner/DOUGLASS%20JIMMY%20C%2FDBA%20DOUGLASS%20FLYING%20SERVICE), [Aspermont, TX](https://openairdocs.org/faa-place/TX/Aspermont)

## Related

- Other North American AT-6G aircraft: https://openairdocs.org/model/north-american-at-6g/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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