# N448B: 2025 Richard Sigler SLING TSI

- Status: Valid registration
- Airframe: [Richard Sigler SLING TSI](https://openairdocs.org/model/richard-sigler-sling-tsi) (registry code 056426U, 4 seats)
- Engine: [Rotax 916 IS series](https://openairdocs.org/engine/rotax-916-is-series) (registry code 55622)
- Data sheets: [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (BRP-Rotax GmbH & Co KG) (OpenAirDocs)
- Serial number: 620SK
- Year built: 2025
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: Sling Aircraft (Pty) Ltd SLING TSI
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 22, 2025
- Certificate issued: December 31, 2025
- Expires: December 31, 2032
- Mode S code: A5686E
- Registered owner: [Sigler Richard J](https://openairdocs.org/faa-owner/SIGLER%20RICHARD%20J)
- Location: [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque)
- Owner type: Individual
- Owner's area on the map: 35.1006° N, 106.5163° W: Placed by OpenAirDocs at the center of ZIP code 87112, 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=448B
- Page: https://openairdocs.org/aircraft/N448B

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 916 IS model are included.

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

### Matched by airframe (Richard Sigler SLING TSI)

None in force.

### Matched by engine (Rotax 916 IS series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N448B.

## FAA accident and incident reports

None matched to N448B.

## 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 N448B

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N448B before.

- [Cancelled 2012-11-29](https://openairdocs.org/deregistered/N448B-2012-11-29): Beech 35, S/N D-1464, built 1948. Registration expired, pending cancellation. Owner: [Barron Thomas Aviation Inc](https://openairdocs.org/faa-owner/BARRON%20THOMAS%20AVIATION%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)

## Related

- Other Richard Sigler SLING TSI aircraft: https://openairdocs.org/model/richard-sigler-sling-tsi/aircraft.md
- The Rotax 916 IS series engine: https://openairdocs.org/engine/rotax-916-is-series.md

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