# N4023S: Ayres S2R-R1820, registration cancelled 1988-06-03

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 3, 1988
- Status when cancelled: Triennial form not returned
- Airframe: [Ayres S2R-R1820](https://openairdocs.org/model/ayres-s2r-r1820) (registry code 0970215)
- Data sheets: [TCDS A4SW](https://openairdocs.org/tcds/A4SW) (OpenAirDocs)
- Serial number: R1820004DC
- Type of aircraft: Fixed wing single engine
- Mode S code: A4B6E1
- The mark today: https://openairdocs.org/aircraft/N4023S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4023S
- Page: https://openairdocs.org/deregistered/N4023S-1988-06-03

From the FAA registry file of November 5, 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-R1820: https://openairdocs.org/model/ayres-s2r-r1820.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 LAX86FVA12](https://openairdocs.org/ntsb/LAX86FVA12), Jul 22, 1986: Ayres S2R (N4023S), Tranquility, CA, destroyed, 1 fatal

## 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 19860722035369A](https://openairdocs.org/incident/19860722035369A), Jul 22, 1986: Ayres S2RR1820 (N4023S), Tranquility, CA, Destroyed. Crashed, burned after pull up from spray run. Witnesses heard a pop and saw aircraft spin as turn lights rotated.

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