# N6422M: 2022 Hertzel CALIDUS

- Status: Valid registration
- Airframe: [Hertzel CALIDUS](https://openairdocs.org/model/hertzel-calidus) (registry code 05635FI, 2 seats)
- Engine: [Rotax 912 IS series](https://openairdocs.org/engine/rotax-912-is-series) (registry code 55593)
- Data sheets: [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (BRP-Rotax GmbH & Co KG) (OpenAirDocs)
- Serial number: C00438
- Year built: 2022
- Type: Rotorcraft
- Engine type: 4 cycle
- Kit: Autogyro Gmbh CALIDUS
- Airworthiness: Experimental, amateur built
- Airworthiness date: June 2, 2022
- Certificate issued: July 6, 2016
- Expires: July 31, 2029
- Mode S code: A86F53
- Registered owner: [Hertzel William H](https://openairdocs.org/faa-owner/HERTZEL%20WILLIAM%20H)
- Location: [Columbia Station, OH](https://openairdocs.org/faa-place/OH/Columbia%20Station)
- Owner type: Individual
- Owner's area on the map: 41.3006° N, 81.9375° W: Placed by OpenAirDocs at the center of ZIP code 44028, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6422M
- Page: https://openairdocs.org/aircraft/N6422M

From the FAA registry file of October 27, 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 912 IS model are included.

## ADs that may apply (OpenAirDocs): 3 in force

### Matched by airframe (Hertzel CALIDUS)

None in force.

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

- [AD 2026-16-11](https://openairdocs.org/ad/2026-16-11): Reciprocating Engine Front Section · BRP-Rotax 912 F2, 912 F3, 912 F4 and 16 more. Effective Aug 28, 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
- [AD 2023-17-13](https://openairdocs.org/ad/2023-17-13): Reciprocating Engine Front Section · BRP-Rotax 912 F2, 912 F3, 912 F4 and 16 more. Effective Sep 20, 2023

### Historical (superseded or no longer in force)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 N6422M.

## FAA accident and incident reports

None matched to N6422M.

## 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 N6422M

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N6422M before.

- [Cancelled 1989-11-14](https://openairdocs.org/deregistered/N6422M-1989-11-14): Cessna 152, S/N 15284721. N-number assigned, not yet registered
- [Cancelled 1970-06-22](https://openairdocs.org/deregistered/N6422M-1970-06-22): Stinson 108-3, S/N 108-4422. Owner: [Otto James Nemec](https://openairdocs.org/faa-owner/OTTO%20JAMES%20NEMEC), [Downers Grove, IL](https://openairdocs.org/faa-place/IL/Downers%20Grove)

## Related

- Other Hertzel CALIDUS aircraft: https://openairdocs.org/model/hertzel-calidus/aircraft.md
- The Rotax 912 IS series engine: https://openairdocs.org/engine/rotax-912-is-series.md

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