# N781US: 2016 Don W Sandell AUTOGYRO GMBH CALIDU

- Status: Valid registration
- Airframe: [Don W Sandell AUTOGYRO GMBH CALIDU](https://openairdocs.org/model/don-w-sandell-autogyro-gmbh-calidu) (registry code 05635I5, 2 seats)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: C00436
- Year built: 2016
- Type: Rotorcraft
- Engine type: 4 cycle
- Kit: Autogyro Gmbh CALIDUS
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 30, 2016
- Certificate issued: August 8, 2016
- Expires: August 31, 2029
- Mode S code: AA9610
- Registered owner: [Sandell Don W](https://openairdocs.org/faa-owner/SANDELL%20DON%20W)
- Location: [Fort Dodge, IA](https://openairdocs.org/faa-place/IA/Fort%20Dodge)
- Owner type: Individual
- Owner's area on the map: 42.4916° N, 94.1871° W: Placed by OpenAirDocs at the center of ZIP code 50501, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=781US
- Page: https://openairdocs.org/aircraft/N781US

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 912ULS model are included.

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

### Matched by airframe (Don W Sandell AUTOGYRO GMBH CALIDU)

None in force.

### Matched by engine (Rotax 912ULS series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N781US.

## FAA accident and incident reports

None matched to N781US.

## 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.

## Related

- Other Don W Sandell AUTOGYRO GMBH CALIDU aircraft: https://openairdocs.org/model/don-w-sandell-autogyro-gmbh-calidu/aircraft.md
- The Rotax 912ULS series engine: https://openairdocs.org/engine/rotax-912uls-series.md

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