# N5539: 2019 Lankenau Kip F SOPWITH TYPE 9400

- Status: Valid registration
- Airframe: [Lankenau Kip F SOPWITH TYPE 9400](https://openairdocs.org/model/lankenau-kip-f-sopwith-type-9400) (registry code 05638LQ, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: N5539
- Year built: 2019
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 5, 2019
- Certificate issued: May 3, 2019
- Expires: May 31, 2029
- Mode S code: A70E23
- Registered owner: [Lankenau Kip F](https://openairdocs.org/faa-owner/LANKENAU%20KIP%20F)
- Location: [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas)
- Owner type: Individual
- Owner's area on the map: 32.8936° N, 96.8673° W: Placed by OpenAirDocs at the center of ZIP code 75229, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5539
- Page: https://openairdocs.org/aircraft/N5539

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 (Lankenau Kip F SOPWITH TYPE 9400)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## 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 CEN20LA259](https://openairdocs.org/ntsb/CEN20LA259), Jul 3, 2020: Sopwith Type 9400 (N5539), Van Alstyne, TX, substantial damage. Probable cause: An inflight loss of aileron control due to movement of a control connector.

## 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 20200703018249A](https://openairdocs.org/incident/20200703018249A), Jul 3, 2020: Lankenau Kip F SOPWITH TYPE 9400 (N5539), Van Alstyne, TX, Substantial damage. On July 3, 2020, at 0956 CDT, an experimental amateur built, Lankenau Kip F, sopwith type 9400, s/n 5539, while on a maintenance test flight was involved in an…

## 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.

## Earlier aircraft with N5539

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N5539 before.

- [Cancelled 1992-04-13](https://openairdocs.org/deregistered/N5539-1992-04-13): Lockheed 188C, S/N 1091. Exported to United Kingdom. Owner: [Wilmington Trust Co Trustee](https://openairdocs.org/faa-owner/WILMINGTON%20TRUST%20CO%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- [Cancelled 1970-07-13](https://openairdocs.org/deregistered/N5539-1970-07-13): Lockheed 188C, S/N 188C1080. Exported to Paraguay. Owner: [Eastern Airlines Inc](https://openairdocs.org/faa-owner/EASTERN%20AIRLINES%20INC), [New York, NY](https://openairdocs.org/faa-place/NY/New%20York)
- [Cancelled 1929-03-02](https://openairdocs.org/deregistered/N5539-1929-03-02): Swallow SWALLOW, S/N 942. Owner: [Conrad Max A](https://openairdocs.org/faa-owner/CONRAD%20MAX%20A), [Winona, MN](https://openairdocs.org/faa-place/MN/Winona)

## Related

- Other Lankenau Kip F SOPWITH TYPE 9400 aircraft: https://openairdocs.org/model/lankenau-kip-f-sopwith-type-9400/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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