# N4168X: 1974 Rockwell International S-2R, registration cancelled 2013-07-19

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 19, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 1937R
- Year built: 1974
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: March 30, 1974
- Certificate issued: September 22, 1987
- Last registry action: October 27, 1997
- Mode S code: A4EDF0
- Owner when cancelled: [Chapman William E](https://openairdocs.org/faa-owner/CHAPMAN%20WILLIAM%20E)
- Location: [Walla Walla, WA](https://openairdocs.org/faa-place/WA/Walla%20Walla)
- Owner type: Individual
- Owner's area on the map: 46.1011° N, 118.3136° W: Placed by OpenAirDocs at the center of ZIP code 99362, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4168X
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4168X
- Page: https://openairdocs.org/deregistered/N4168X-2013-07-19

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 (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 LAX99LA312](https://openairdocs.org/ntsb/LAX99LA312), Sep 19, 1999: Rockwell S-2R (N4168X), Acampo, CA, destroyed. Probable cause: The pilot's failure to maintain runway alignment, which resulted in the aircraft encountering high vegetation, the loss of directional control, and collision with trees.
- [NTSB FTW79DRJ14](https://openairdocs.org/ntsb/FTW79DRJ14), Jun 19, 1979: Rockwell S2R (N4168X), Garland, 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 19990919027809A](https://openairdocs.org/incident/19990919027809A), Sep 19, 1999: Ayres S2R (N4168X), Acampo, CA, Substantial damage. (.19) On September 19, 1999, at 1706 hours pacific daylight time, a rockwell S-2R, N4168X, collided with trees after takeoff from a Private airstrip near…
- [Accident 19790619018739A](https://openairdocs.org/incident/19790619018739A), Jun 19, 1979: Ayres S2R (N4168X), Garland, AR, Substantial damage. Acft veered off side of runway. Struck wind sock pole. Right brake cylinder malfunction.

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