# N135WT: 2018 Wayne Toddun SLING 4 TSI

- Status: Valid registration
- Airframe: [Wayne Toddun SLING 4 TSI](https://openairdocs.org/model/wayne-toddun-sling-4-tsi) (registry code 05637S5, 4 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 131S
- Year built: 2018
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: Airplane Factory SLING 4 TSI
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 27, 2018
- Certificate issued: July 2, 2022
- Expires: July 31, 2029
- Mode S code: A08FCA
- Registered owner: [Aviation Financial Corp](https://openairdocs.org/faa-owner/AVIATION%20FINANCIAL%20CORP)
- Location: [Torrance, CA](https://openairdocs.org/faa-place/CA/Torrance)
- Owner type: Non-citizen corporation
- Owner's area on the map: 33.8079° N, 118.3480° W: Placed by OpenAirDocs at the center of ZIP code 90505, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=135WT
- Page: https://openairdocs.org/aircraft/N135WT

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 (Wayne Toddun SLING 4 TSI)

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 WPR23LA352](https://openairdocs.org/ntsb/WPR23LA352), Sep 25, 2023: Wayne Toddun Sling 4 TSI (N135WT), San Pedro, CA, substantial damage. Probable cause: A total loss of engine power due to a failure of the No. 4 cylinder exhaust valve from overheating and excessive wear.

## 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 20230925018929A](https://openairdocs.org/incident/20230925018929A), Sep 25, 2023: Wayne Toddun SLING 4 TSI (N135WT), San Pedro, CA, Substantial damage. The aircraft was substantially damaged when it impacted a field about 3 NM southeast of the pilot’s destination airport, zamperini field airport (toa),…

## 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 Wayne Toddun SLING 4 TSI aircraft: https://openairdocs.org/model/wayne-toddun-sling-4-tsi/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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