# N11XS: Prange Douglas KOLB TWNSTR MARK III

- Status: Valid registration
- Airframe: [Prange Douglas KOLB TWNSTR MARK III](https://openairdocs.org/model/prange-douglas-kolb-twnstr-mark-iii) (registry code 05603H5, 2 seats)
- Engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050)
- Serial number: M3-231
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 24, 1997
- Certificate issued: April 25, 2026
- Expires: April 30, 2033
- Mode S code: A02BF8
- Registered owner: [Stockman Harold D](https://openairdocs.org/faa-owner/STOCKMAN%20HAROLD%20D)
- Location: [Elko, NV](https://openairdocs.org/faa-place/NV/Elko)
- Owner type: Individual
- Owner's area on the map: 41.1650° N, 115.7572° W: Placed by OpenAirDocs at the center of ZIP code 89801, within about 20 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=11XS
- Page: https://openairdocs.org/aircraft/N11XS

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 (Prange Douglas KOLB TWNSTR MARK III)

None in force.

### Matched by engine (Bombardier ROTAX (ALL))

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N11XS.

## FAA accident and incident reports

None matched to N11XS.

## 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 N11XS

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N11XS before.

- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N11XS-undated): Nicola AIRCAMPER, S/N JN1. Triennial form not returned

## Related

- Other Prange Douglas KOLB TWNSTR MARK III aircraft: https://openairdocs.org/model/prange-douglas-kolb-twnstr-mark-iii/aircraft.md
- The Bombardier ROTAX (ALL) engine: https://openairdocs.org/engine/bombardier-rotax-all.md

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