# N4021S: 1980 Ayres S2R-600, registration cancelled 2013-11-08

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 8, 2013
- Exported to: Guatemala
- Status when cancelled: Valid registration
- Airframe: [Ayres S2R-600](https://openairdocs.org/model/ayres-s2r-600) (registry code 0970102)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 2561R
- Year built: 1980
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: July 1, 1980
- Certificate issued: October 18, 2013
- Last registry action: October 18, 2013
- Mode S code: A4B69B
- Owner when cancelled: [Aircraft Escrow & Title Co](https://openairdocs.org/faa-owner/AIRCRAFT%20ESCROW%20%26%20TITLE%20CO)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7236° N, 75.5412° W: Placed by OpenAirDocs at the center of ZIP code 19801, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4021S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4021S
- Page: https://openairdocs.org/deregistered/N4021S-2013-11-08

From the FAA registry file of November 3, 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 Ayres S2R-600: https://openairdocs.org/model/ayres-s2r-600.md

## 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 WPR11LA366](https://openairdocs.org/ntsb/WPR11LA366), Aug 3, 2011: Ayres S2R-600 (N4021S), Hazelton, ID, substantial damage. Probable cause: Partial loss of engine power for undetermined reasons.

## 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 20110803016199A](https://openairdocs.org/incident/20110803016199A), Aug 3, 2011: Ayres Corporation S2R-600 (N4021S), Hazelton, ID, Substantial damage. On the 7th flight of the day, cruising to the field, the engine started to loose power. The pilot added flaps in order to clear a power line. The aircraft…

## Other aircraft with N4021S

- [Cancelled 1972-05-23](https://openairdocs.org/deregistered/N4021S-1972-05-23): Sikorsky S-61D, S/N 61497. Exported to Argentina. Owner: [Sikorsky Aircraft Division United Aircraft Corp](https://openairdocs.org/faa-owner/SIKORSKY%20AIRCRAFT%20DIVISION%20UNITED%20AIRCRAFT%20CORP), [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford)

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