# N4978X: 1975 Rockwell International S-2R, registration cancelled 2013-08-19

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 19, 2013
- Status when cancelled: Sale reported, canceled
- Airframe: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202)
- Engine: [Wright C7BA series](https://openairdocs.org/engine/wright-c7ba-series) (registry code 67017)
- Serial number: 5023R
- Year built: 1975
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: April 22, 1975
- Last registry action: June 4, 1998
- Mode S code: A62D9F
- Location: [Lewiston, ID](https://openairdocs.org/faa-place/ID/Lewiston)
- Owner type: Individual
- Owner's area on the map: 46.2517° N, 116.9250° W: Placed by OpenAirDocs at the center of ZIP code 83501, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4978X
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4978X
- Page: https://openairdocs.org/deregistered/N4978X-2013-08-19

From the FAA registry file of October 31, 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 Rockwell International S-2R: https://openairdocs.org/model/rockwell-international-s-2r.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 SEA97LA088](https://openairdocs.org/ntsb/SEA97LA088), Apr 18, 1997: Rockwell S-2R (N4978X), Prescott, WA, substantial damage. Probable cause: failure of the pilot to maintain terrain clearance from uneven/hilly terrain.

## 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 19970418006149A](https://openairdocs.org/incident/19970418006149A), Apr 18, 1997: Ayres S2R (N4978X), Prescott, WA, Substantial damage. (.19) See NTSB #SEA97LA088
- [Accident 19860519018559A](https://openairdocs.org/incident/19860519018559A), May 19, 1986: Ayres S2RR1340REST (N4978X), Odessa, WA, Destroyed. Rough engine with smoke from engine compartment. Landed in a field and burned. NR1 cylinder had failed.

---
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.