# N4990X: 1975 Rockwell International S-2R

- Status: Valid registration
- Airframe: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202, 1 seats)
- Engine: [Wright C7BA series](https://openairdocs.org/engine/wright-c7ba-series) (registry code 67017)
- Serial number: 5035R
- Year built: 1975
- Type: Fixed wing single engine
- Engine type: Turbo-prop
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: November 29, 1979
- Certificate issued: January 16, 2004
- Expires: July 31, 2029
- Mode S code: A633F5
- Registered owners: [Simpson Don DBA](https://openairdocs.org/faa-owner/SIMPSON%20DON%20DBA), [Brazos Valley Flying Srv](https://openairdocs.org/faa-owner/BRAZOS%20VALLEY%20FLYING%20SRV)
- Location: [Bryan, TX](https://openairdocs.org/faa-place/TX/Bryan)
- Owner type: Individual
- Owner's area on the map: 30.6777° N, 96.4836° W: Placed by OpenAirDocs at the center of ZIP code 77807, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4990X
- Page: https://openairdocs.org/aircraft/N4990X

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Wright C7BA model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Rockwell International S-2R)

None in force.

### Matched by engine (Wright C7BA series)

None in force.

## Information bulletins (advisory)

None matched.

## 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 CEN26LA221](https://openairdocs.org/ntsb/CEN26LA221), May 20, 2026: Rockwell International S-2R (N4990X), Gause, TX, substantial damage. Probable cause: The loss of engine power due to fuel starvation. Contributing to the accident was the separated wing fuel tank screen and sealant debris in the fuel tank.
- [NTSB SEA76DYA44](https://openairdocs.org/ntsb/SEA76DYA44), Aug 2, 1976: Aero Comdr 600S2R (N4990X), Rexburg, ID, substantial damage

## 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 20260520009079A](https://openairdocs.org/incident/20260520009079A), May 20, 2026: Rockwell International S-2R (N4990X), Gause, TX, Substantial damage. On 05/20/2026, aircraft [privacy data omitted] arrived at a scheduled fungicide application site. The aircraft sprayed 140 acres with no issues with the…

## Reports on N4990X not matched to an aircraft (1)

They name N4990X, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Accident 19760802021499A](https://openairdocs.org/incident/19760802021499A), Aug 2, 1976: Airpts A9A (N4990X), Rexburg, ID, Substantial damage

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Rockwell International S-2R aircraft: https://openairdocs.org/model/rockwell-international-s-2r/aircraft.md
- The Wright C7BA series engine: https://openairdocs.org/engine/wright-c7ba-series.md

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