# N5526X: 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: 1726R
- Year built: 1973
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, research and development
- Airworthiness date: October 27, 1994
- Certificate issued: April 14, 1998
- Expires: March 31, 2030
- Mode S code: A70A19
- Registered owners: [Farm And Ranch Aviation Co](https://openairdocs.org/faa-owner/FARM%20AND%20RANCH%20AVIATION%20CO), [Mamuzich Robert J](https://openairdocs.org/faa-owner/MAMUZICH%20ROBERT%20J), [Mamuzich Belia V](https://openairdocs.org/faa-owner/MAMUZICH%20BELIA%20V)
- Location: [Deming, NM](https://openairdocs.org/faa-place/NM/Deming)
- Owner type: Co-owned
- Owner's area on the map: 32.1734° N, 107.7274° W: Placed by OpenAirDocs at the center of ZIP code 88030, within about 29 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5526X
- Page: https://openairdocs.org/aircraft/N5526X

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 (2)

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 FTW78DPG47](https://openairdocs.org/ntsb/FTW78DPG47), Jun 11, 1978: Aero Comdr S-2R (N5526X), Jonesboro, AR, substantial damage
- [NTSB FTW75FPG78](https://openairdocs.org/ntsb/FTW75FPG78), May 30, 1975: Aero Comdr 600S2R (N5526X), Indian Switch, AR, substantial damage

## FAA accident and incident reports (2)

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 19780616014619A](https://openairdocs.org/incident/19780616014619A), Jun 16, 1978: Ayres S2B (N5526X), Jonesboro, AR, Substantial damage
- [Accident 19750530015299A](https://openairdocs.org/incident/19750530015299A), May 30, 1975: Ayres S2R (N5526X), Indian Switch, AR, Substantial damage. Unusable fuel only found in tanks. No load abd.

## 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 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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