# N991TC: 2017 Autogyro USA CALIDUS

- Status: Valid registration
- Airframe: [Autogyro USA CALIDUS](https://openairdocs.org/model/autogyro-usa-calidus) (registry code 05636HZ, 2 seats)
- Engine: [Rotax 914UL](https://openairdocs.org/engine/rotax-914ul) (registry code 55553)
- Data sheets: [TCDS R00006RD](https://openairdocs.org/tcds/R00006RD) (AutoGyro Certification Limited) (OpenAirDocs)
- Serial number: C00335
- Year built: 2017
- Type: Gyroplane
- Engine type: 4 cycle
- Kit: Autogyro Gmbh CALIDUS
- Airworthiness: Experimental, amateur built
- Airworthiness date: February 2, 2018
- Certificate issued: July 5, 2018
- Expires: July 31, 2028
- Mode S code: ADD806
- Registered owner: [991tc LLC](https://openairdocs.org/faa-owner/991TC%20LLC)
- Location: [Manhattan, KS](https://openairdocs.org/faa-place/KS/Manhattan)
- Owner type: LLC
- Owner's area on the map: 39.2650° N, 96.6953° W: Placed by OpenAirDocs at the center of ZIP code 66503, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=991TC
- Page: https://openairdocs.org/aircraft/N991TC

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): 1 in force

### Matched by airframe (Autogyro USA CALIDUS)

- [AD 2022-13-07](https://openairdocs.org/ad/2022-13-07): Main Rotor Blades · AutoGyro Certification Calidus, Cavalon and MTOsport 2017. Effective Jul 7, 2022

### Matched by engine (Rotax 914UL)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N991TC.

## FAA accident and incident reports

None matched to N991TC.

## 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 N991TC

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N991TC before.

- [Cancelled 2017-08-17](https://openairdocs.org/deregistered/N991TC-2017-08-17): Autogyro USA CALIDUS, S/N US-C00483, built 2017. Owner: [Autogyro USA Inc](https://openairdocs.org/faa-owner/AUTOGYRO%20USA%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- [Cancelled 2011-08-01](https://openairdocs.org/deregistered/N991TC-2011-08-01): Thunder Balloons AX7-77, S/N 1464US, built 1989. Expired dealer. Owner: [Para Balloon Assoc Inc](https://openairdocs.org/faa-owner/PARA%20BALLOON%20ASSOC%20INC), [St Louis, MO](https://openairdocs.org/faa-place/MO/St%20Louis)

## Related

- Other Autogyro USA CALIDUS aircraft: https://openairdocs.org/model/autogyro-usa-calidus/aircraft.md
- The Rotax 914UL engine: https://openairdocs.org/engine/rotax-914ul.md

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