# N51AR: 1970 Aero Commander S2R

- Status: Valid registration
- Airframe: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022, 1 seats)
- Engine: [Walter M601 series](https://openairdocs.org/engine/walter-m601-series) (registry code 64002)
- Data sheets: [TCDS E00048EN](https://openairdocs.org/tcds/E00048EN) (GE Aviation Czech s.r.o.) (OpenAirDocs)
- Serial number: 1523R
- Year built: 1970
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: June 4, 2008
- Certificate issued: February 28, 2017
- Expires: February 28, 2030
- Mode S code: A65F26
- Registered owner: [Olsem Aerial Application Services LLC](https://openairdocs.org/faa-owner/OLSEM%20AERIAL%20APPLICATION%20SERVICES%20LLC)
- Location: [Westbrook, MN](https://openairdocs.org/faa-place/MN/Westbrook)
- Owner type: LLC
- Owner's area on the map: 44.0290° N, 95.4311° W: Placed by OpenAirDocs at the center of ZIP code 56183, 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=51AR
- Page: https://openairdocs.org/aircraft/N51AR

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 Walter M601 model are included.

## ADs that may apply (OpenAirDocs): 13 in force

### Matched by airframe (Aero Commander S2R)

None in force.

### Matched by engine (Walter M601 series)

- [AD 2025-18-08](https://openairdocs.org/ad/2025-18-08): Engine Mount Section; Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Oct 21, 2025
- [AD 2024-03-05](https://openairdocs.org/ad/2024-03-05): Turbine Engine Reduction Gear · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Apr 17, 2024
- [AD 2024-02-04](https://openairdocs.org/ad/2024-02-04): Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601E-11, M601E-11A, M601E-11AS and 1 more. Effective Mar 28, 2024
- [AD 2023-12-24](https://openairdocs.org/ad/2023-12-24): Engine · GE Aviation Czech s.r.o. M601E-11AS, M601E-11S, H75-100 and 2 more. Effective Aug 15, 2023
- [AD 2023-01-10](https://openairdocs.org/ad/2023-01-10): Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601E-11, M601E-11A, M601E-11AS and 2 more. Effective Mar 13, 2023
- [AD 2022-26-01](https://openairdocs.org/ad/2022-26-01): Turbine Engine Combustion Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 10 more. Effective Jan 26, 2023
- [AD 2022-14-12](https://openairdocs.org/ad/2022-14-12): Turbine Engine Reduction Gear · GE Aviation Czech s.r.o. M601F, M601E-11, M601E-11A and 3 more. Effective Aug 18, 2022
- [AD 2022-13-16](https://openairdocs.org/ad/2022-13-16): Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601D-11. Effective Aug 1, 2022
- [AD 2020-23-01](https://openairdocs.org/ad/2020-23-01): Fuel Control/Turbine Engines · GE Aviation Czech s.r.o. H75-200, H80-100, H80-200 and 7 more. Effective Nov 24, 2020
- [AD 2020-15-04](https://openairdocs.org/ad/2020-15-04): Engine Collector/Tailpipe/Nozzle · GE Aviation Czech s.r.o. H75-100, H75-200, H80 and 10 more. Effective Aug 31, 2020
- [AD 2020-15-03](https://openairdocs.org/ad/2020-15-03): Turbine Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Aug 31, 2020
- [AD 2015-17-20](https://openairdocs.org/ad/2015-17-20): Gas generator turbine (GGT) blades · GE Aviation Czech s.r.o. M601E-11, M601E-11A and M601F. Effective Oct 1, 2015
- [AD 2015-14-02](https://openairdocs.org/ad/2015-14-02): Reduction gearbox and supporting cone · GE Aviation Czech s.r.o. M601E-11, M601E-11A and M601F. Effective Aug 18, 2015

### Historical (superseded or no longer in force)

- [AD 2024-06-02](https://openairdocs.org/ad/2024-06-02) (historical): Engine Mount Section; Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Apr 11, 2024
- [AD 2021-13-07](https://openairdocs.org/ad/2021-13-07) (historical): Engine (Turbine/Turboprop) · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Jun 30, 2021
- [AD 2018-03-22](https://openairdocs.org/ad/2018-03-22) (historical): Turbine Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Mar 21, 2018
- [AD 2016-07-13](https://openairdocs.org/ad/2016-07-13) (historical): Engine power turbine (PT) disk · GE Aviation Czech s.r.o. M601E-11. Effective Apr 22, 2016

## 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 CEN10LA422](https://openairdocs.org/ntsb/CEN10LA422), Jul 22, 2010: Aero Commander S2R (N51AR), McCook, NE, substantial damage. Probable cause: The pilot's inadequate visual lookout during taxi, which resulted in a collision with a parked airplane.

## 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 20100722039372A](https://openairdocs.org/incident/20100722039372A), Jul 22, 2010: Aero Comman S2R (N51AR), Mccook, NE, Destroyed. On July 22, 2010, [privacy data omitted], was taxiing for takeoff in Aero commander, N51AR. Pilot [privacy data omitted] failed to observe Piper, PA-18-150,…

## 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 N51AR

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N51AR before.

- [Cancelled 1997-10-16](https://openairdocs.org/deregistered/N51AR-1997-10-16): Piper PA-22-150, S/N 227493. Triennial form not returned. Owner: [Munger Joshua L Jr](https://openairdocs.org/faa-owner/MUNGER%20JOSHUA%20L%20JR), [Elephant Butte, NM](https://openairdocs.org/faa-place/NM/Elephant%20Butte)

## Related

- Other Aero Commander S2R aircraft: https://openairdocs.org/model/aero-commander-s2r/aircraft.md
- The Walter M601 series engine: https://openairdocs.org/engine/walter-m601-series.md

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