# N107SM: 2006 Test Spol Sro TST-14M BONUS

- Status: Valid registration
- Airframe: [Test Spol Sro TST-14M BONUS](https://openairdocs.org/model/test-spol-sro-tst-14m-bonus) (registry code 05902BH, 2 seats)
- Engine: [Rotax 503UL](https://openairdocs.org/engine/rotax-503ul) (registry code 55565)
- Serial number: 14010906
- Year built: 2006
- Type: Glider
- Engine type: 2 cycle
- Airworthiness: Light sport, glider
- Airworthiness date: June 20, 2007
- Certificate issued: May 8, 2019
- Expires: May 31, 2029
- Mode S code: A02051
- Registered owner: [Dierker Robert R](https://openairdocs.org/faa-owner/DIERKER%20ROBERT%20R)
- Location: [Chestertown, MD](https://openairdocs.org/faa-place/MD/Chestertown)
- Owner type: Individual
- Owner's area on the map: 39.2095° N, 76.0839° W: Placed by OpenAirDocs at the center of ZIP code 21620, 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=107SM
- Page: https://openairdocs.org/aircraft/N107SM

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 (Test Spol Sro TST-14M BONUS)

None in force.

### Matched by engine (Rotax 503UL)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N107SM.

## FAA accident and incident reports

None matched to N107SM.

## 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 N107SM

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N107SM before.

- [Cancelled 1999-03-11](https://openairdocs.org/deregistered/N107SM-1999-03-11): Schweizer 269C-1, S/N 0011. Triennial form not returned. Owner: [Montoya Steve F Jr](https://openairdocs.org/faa-owner/MONTOYA%20STEVE%20F%20JR), [San Angelo, TX](https://openairdocs.org/faa-place/TX/San%20Angelo)

## Related

- Other Test Spol Sro TST-14M BONUS aircraft: https://openairdocs.org/model/test-spol-sro-tst-14m-bonus/aircraft.md
- The Rotax 503UL engine: https://openairdocs.org/engine/rotax-503ul.md

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