# N4431E: 1986 Phillips Sherrill KOLB

- Status: Valid registration
- Airframe: [Phillips Sherrill KOLB](https://openairdocs.org/model/phillips-sherrill-kolb) (registry code 05904OQ, 1 seats)
- Engine: [Rotax 447](https://openairdocs.org/engine/rotax-447) (registry code 55576)
- Serial number: 97142K
- Year built: 1986
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: January 23, 2008
- Certificate issued: November 19, 2020
- Expires: November 30, 2027
- Mode S code: A55842
- Registered owner: [Roberson Kenneth S](https://openairdocs.org/faa-owner/ROBERSON%20KENNETH%20S)
- Location: [Halifax, NC](https://openairdocs.org/faa-place/NC/Halifax)
- Owner type: Individual
- Owner's area on the map: 36.2804° N, 77.5681° W: Placed by OpenAirDocs at the center of ZIP code 27839, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4431E
- Page: https://openairdocs.org/aircraft/N4431E

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.

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

### Matched by airframe (Phillips Sherrill KOLB)

None in force.

### Matched by engine (Rotax 447)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4431E.

## NTSB investigations on N4431E not matched to an aircraft (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 UNK64X3163](https://openairdocs.org/ntsb/UNK64X3163), Aug 2, 1964: Aeronca 7AC (N4431E), Bartlett, IL, destroyed

## FAA accident and incident reports

None matched to N4431E.

## 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 Phillips Sherrill KOLB aircraft: https://openairdocs.org/model/phillips-sherrill-kolb/aircraft.md
- The Rotax 447 engine: https://openairdocs.org/engine/rotax-447.md

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