# N1725S: 1966 Aero Commander 600 S-2D

- Status: Valid registration
- Airframe: [Aero Commander 600 S-2D](https://openairdocs.org/model/aero-commander-600-s-2d) (registry code 0143010, 1 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 600-1325D
- Year built: 1966
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: May 2, 1967
- Certificate issued: May 22, 1997
- Expires: June 30, 2027
- Mode S code: A123B3
- Registered owner: [Schwend Brian](https://openairdocs.org/faa-owner/SCHWEND%20BRIAN)
- Location: [Forsyth, MT](https://openairdocs.org/faa-place/MT/Forsyth)
- Owner type: Individual
- Owner's area on the map: 46.2368° N, 106.6822° W: Placed by OpenAirDocs at the center of ZIP code 59327, within about 25 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=1725S
- Page: https://openairdocs.org/aircraft/N1725S

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 (Aero Commander 600 S-2D)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (3)

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 OAK75DXQ11](https://openairdocs.org/ntsb/OAK75DXQ11), Jul 28, 1974: Snow 600S2D (N1725S), Orovada, NV, substantial damage
- [NTSB FTW72DPG23](https://openairdocs.org/ntsb/FTW72DPG23), Aug 16, 1971: Snow 600S2D (N1725S), Parkin, AR, substantial damage
- [NTSB MKC71DCG07](https://openairdocs.org/ntsb/MKC71DCG07), Jul 16, 1970: Aero Comdr 600S2D (N1725S), Faucett, MO, substantial damage

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19740728021939A](https://openairdocs.org/incident/19740728021939A), Jul 28, 1974: Ayres 600S2D (N1725S), Orovada, NV, Substantial damage. Plt rptd gradual pwr failure

## 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 Commander 600 S-2D aircraft: https://openairdocs.org/model/aero-commander-600-s-2d/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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