# N540MC: 2023 Jakus Matthew T SLING 4 TSI

- Status: Valid registration
- Airframe: [Jakus Matthew T SLING 4 TSI](https://openairdocs.org/model/jakus-matthew-t-sling-4-tsi) (registry code 05641M6, 4 seats)
- Engine: [Rotax 915 IS series](https://openairdocs.org/engine/rotax-915-is-series) (registry code 55620)
- Data sheets: [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (BRP-Rotax GmbH & Co KG) (OpenAirDocs)
- Serial number: 181SK
- Year built: 2023
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Airplane Factory SLING 4 TSI
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 8, 2023
- Certificate issued: March 7, 2023
- Expires: March 31, 2030
- Mode S code: A6D902
- Registered owner: [Jakus Matthew T](https://openairdocs.org/faa-owner/JAKUS%20MATTHEW%20T)
- Location: [Parowan, UT](https://openairdocs.org/faa-place/UT/Parowan)
- Owner type: Individual
- Owner's area on the map: 37.8522° N, 112.8656° W: Placed by OpenAirDocs at the center of ZIP code 84761, 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=540MC
- Page: https://openairdocs.org/aircraft/N540MC

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 Rotax 915 IS model are included.

## ADs that may apply (OpenAirDocs): 2 in force

### Matched by airframe (Jakus Matthew T SLING 4 TSI)

None in force.

### Matched by engine (Rotax 915 IS series)

- [AD 2026-04-02](https://openairdocs.org/ad/2026-04-02): Turbine Engine Reduction Gear · BRP-Rotax 915 iSc2 C24 and 915 iSc3 C24. Effective Mar 19, 2026
- [AD 2025-15-03](https://openairdocs.org/ad/2025-15-03): Reciprocating Engine Oil System · BRP-Rotax 912 iSc2 Sport, 912 iSc3 Sport, 915 iSc2 C24 and 1 more. Effective Aug 6, 2025

### Historical (superseded or no longer in force)

- [AD 2025-07-02](https://openairdocs.org/ad/2025-07-02) (historical): Reciprocating Engine Oil System · BRP-Rotax 912 iSc2 Sport, 912 iSc3 Sport, 915 iSc2 C24 and 1 more. Effective Apr 21, 2025

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N540MC.

## FAA accident and incident reports

None matched to N540MC.

## Reports on N540MC not matched to an aircraft (1)

They name N540MC, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19900331013559I](https://openairdocs.org/incident/19900331013559I), Mar 31, 1990: Swrngn SA26AT (N540MC), Atlanta, GA, Minor damage. Right engine lost oil pressure on base leg. Shut down. Landed long and ran off side of runway.

## 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) (1)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Rotax 915 IS series)

- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. Lists 915 iSc2 C24

## Earlier aircraft with N540MC

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N540MC before.

- [Cancelled 2011-09-30](https://openairdocs.org/deregistered/N540MC-2011-09-30): Boeing 747-243B, S/N 22508, built 1980. Triennial form not returned. Owner: [Atlas Air Inc](https://openairdocs.org/faa-owner/ATLAS%20AIR%20INC), [Purchase, NY](https://openairdocs.org/faa-place/NY/Purchase)

## Related

- Other Jakus Matthew T SLING 4 TSI aircraft: https://openairdocs.org/model/jakus-matthew-t-sling-4-tsi/aircraft.md
- The Rotax 915 IS series engine: https://openairdocs.org/engine/rotax-915-is-series.md

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