# N5521X: 1973 Aero Commander S2R, registration cancelled 2021-10-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 18, 2021
- Status when cancelled: Sale reported, canceled
- Airframe: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 1721R
- Year built: 1973
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: June 5, 1997
- Last registry action: January 20, 2021
- Mode S code: A7096A
- Location: [Argyle, MN](https://openairdocs.org/faa-place/MN/Argyle)
- Owner type: Individual
- Owner's area on the map: 48.3511° N, 96.8145° W: Placed by OpenAirDocs at the center of ZIP code 56713, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5521X
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5521X
- Page: https://openairdocs.org/deregistered/N5521X-2021-10-18

From the FAA registry file of November 7, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Aero Commander S2R: https://openairdocs.org/model/aero-commander-s2r.md

## Service difficulty reports (1)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 96ZZZX4956](https://openairdocs.org/sdr/96ZZZX4956), Aug 9, 1996: HINGE. FAILED. THE TOP HALF OF THE RUDDER SEPARATED AND DEPARTED ACFT LANDING ON NEW YORK THRUWAY. UNEVENTFUL LANDING MADE. INVESTIGATION FOUND THE TOP RUDDER HINGE ('NEW' TYP

## 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 CEN18LA332](https://openairdocs.org/ntsb/CEN18LA332), Aug 15, 2018: Aero Commander S2R (N5521X), Westbrook, MN, substantial damage. Probable cause: A runway excursion during takeoff for reasons that could not be determined based on the available evidence.
- [NTSB ANC75AA004](https://openairdocs.org/ntsb/ANC75AA004), Jul 9, 1974: Aero Comdr 600S2R (N5521X), Umiat, AK, substantial damage
- [NTSB FTW74DPG30](https://openairdocs.org/ntsb/FTW74DPG30), Oct 8, 1973: Aero Comdr S-2R (N5521X), Fisher, AR, destroyed

## FAA accident and incident reports (5)

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 20180815011589A](https://openairdocs.org/incident/20180815011589A), Aug 15, 2018: Aero Commander S2R (N5521X), Westbrooke, MN, Substantial damage. Pilot aborted takeoff due to perceived loss of power. Aircraft then went off end of runway at high speed, and flipped over after travelling 600 feet through…
- [Incident 19970801026419I](https://openairdocs.org/incident/19970801026419I), Aug 1, 1997: Ayres S2R (N5521X), Interlaken, NY, Minor damage. Narrative: on Friday, August 1, 1997, at 0630 local time, an aero commander thrush S2R, N5521X, owned by savannah agri-air, inc. savannah, NY departed ovid, NY…
- [Incident 19960809027959I](https://openairdocs.org/incident/19960809027959I), Aug 9, 1996: Ayres S2RR1340REST (N5521X), Savannah, NY. Narrative: top half of rudder separated from aircraft. Uneventful landing; no injuries. Found top rudder hinge was of "new" type triple hinge design and…
- [Accident 19740709033179A](https://openairdocs.org/incident/19740709033179A), Jul 9, 1974: Ayres S2R (N5521X), Umiat, AK, Substantial damage. Heavily loaded.l gr strut failed at old weld.
- [Accident 19731008034109A](https://openairdocs.org/incident/19731008034109A), Oct 8, 1973: Ayres S2R (N5521X), Fisher, AR, Substantial damage. Plt last pass made l turn too close to rice l wing tip hit rice acft cartwheeled.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.