# N1662S: 1973 Aero Commander S2R

- Status: Valid registration
- Airframe: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022, 1 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 1835R
- Year built: 1973
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: October 30, 1973
- Certificate issued: April 5, 2010
- Expires: January 31, 2030
- Mode S code: A10AA7
- Registered owner: [Slater Richard J](https://openairdocs.org/faa-owner/SLATER%20RICHARD%20J)
- Location: [Maddock, ND](https://openairdocs.org/faa-place/ND/Maddock)
- Owner type: Individual
- Owner's area on the map: 47.9534° N, 99.5211° W: Placed by OpenAirDocs at the center of ZIP code 58348, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=1662S
- Page: https://openairdocs.org/aircraft/N1662S

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 S2R)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (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 CEN20LA294](https://openairdocs.org/ntsb/CEN20LA294), Jul 20, 2020: Rockwell S2R (N1662S), Harlan, IA, substantial damage. Probable cause: The fatigue fracture of the upper rudder hinge that resulted in a partial separation of the rudder from the airplane during a spray pass.

## 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 20200720010609A](https://openairdocs.org/incident/20200720010609A), Jul 20, 2020: Aero Commander S2R (N1662S), Harlan, IA, Minor damage. Pilot was on a spray run when the aircraft started yawing to the left and pitching down. The pilot had both hands on the stick pulling back to keep from…

## 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 N1662S

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N1662S before.

- [Cancelled 2006-08-28](https://openairdocs.org/deregistered/N1662S-2006-08-28): Snow 600-S2C, S/N 6001235C, built 1964. Triennial form not returned. Owner: [Ulen Aviation Inc](https://openairdocs.org/faa-owner/ULEN%20AVIATION%20INC), [Ulen, MN](https://openairdocs.org/faa-place/MN/Ulen)

## Related

- Other Aero Commander S2R aircraft: https://openairdocs.org/model/aero-commander-s2r/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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