# N137DF: 2024 Daniel R Yocum KITFOX S7 STI

- Status: Valid registration
- Airframe: [Daniel R Yocum KITFOX S7 STI](https://openairdocs.org/model/daniel-r-yocum-kitfox-s7-sti) (registry code 05641W7, 2 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: KA20339474
- Year built: 2024
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Kitfox Aircraft LLC KITFOX SERIES 7 STI
- Airworthiness: Experimental, amateur built, operating kit built
- Airworthiness date: September 13, 2024
- Certificate issued: January 31, 2024
- Expires: January 31, 2031
- Mode S code: A09583
- Registered owner: [Yocum Daniel R](https://openairdocs.org/faa-owner/YOCUM%20DANIEL%20R)
- Location: [Boise, ID](https://openairdocs.org/faa-place/ID/Boise)
- Owner type: Individual
- Owner's area on the map: 43.8759° N, 115.1604° W: Placed by OpenAirDocs at the center of ZIP code 83716, within about 18 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=137DF
- Page: https://openairdocs.org/aircraft/N137DF

From the FAA registry file of October 22, 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 (Daniel R Yocum KITFOX S7 STI)

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### Historical (superseded or no longer in force)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 N137DF.

## FAA accident and incident reports

None matched to N137DF.

## 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 N137DF

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N137DF before.

- [Cancelled 2015-05-04](https://openairdocs.org/deregistered/N137DF-2015-05-04): Robinson Helicopter R22 BETA, S/N 3378, built 2002. Registration expired, pending cancellation. Owner: [Davis Pharmaceutical Consulting Inc](https://openairdocs.org/faa-owner/DAVIS%20PHARMACEUTICAL%20CONSULTING%20INC), [Dayton, NJ](https://openairdocs.org/faa-place/NJ/Dayton)

## Related

- Other Daniel R Yocum KITFOX S7 STI aircraft: https://openairdocs.org/model/daniel-r-yocum-kitfox-s7-sti/aircraft.md
- The Rotax 915 IS series engine: https://openairdocs.org/engine/rotax-915-is-series.md

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