# N87AC: Niki Rotor KALLITHEA

- Status: Valid registration
- Airframe: [Niki Rotor KALLITHEA](https://openairdocs.org/model/niki-rotor-kallithea) (registry code 05638H8, 2 seats)
- Engine: [Rotax 915 IS series](https://openairdocs.org/engine/rotax-915-is-series) (registry code 55620)
- Data sheets: [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (BRP-Rotax GmbH & Co KG) (OpenAirDocs)
- Serial number: K0008
- Type: Gyroplane
- Engine type: 4 cycle
- Airworthiness: Experimental, exhibition
- Airworthiness date: April 18, 2019
- Certificate issued: May 11, 2024
- Expires: May 31, 2031
- Mode S code: ABF400
- Registered owner: [Lehfeldt Max R](https://openairdocs.org/faa-owner/LEHFELDT%20MAX%20R)
- Location: [South Pasadena, CA](https://openairdocs.org/faa-place/CA/South%20Pasadena)
- Owner type: Individual
- Owner's area on the map: 34.1090° N, 118.1566° W: Placed by OpenAirDocs: center of South Pasadena, CA, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=87AC
- Page: https://openairdocs.org/aircraft/N87AC

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 915 IS model are included.

## ADs that may apply (OpenAirDocs): 2 in force

### Matched by airframe (Niki Rotor KALLITHEA)

None in force.

### Matched by engine (Rotax 915 IS series)

- [AD 2026-04-02](https://openairdocs.org/ad/2026-04-02): Turbine Engine Reduction Gear · BRP-Rotax 915 iSc2 C24 and 915 iSc3 C24. Effective Mar 19, 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

### Historical (superseded or no longer in force)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 N87AC.

## FAA accident and incident reports

None matched to N87AC.

## 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) (1)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Rotax 915 IS series)

- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. Lists 915 iSc2 C24

## Earlier aircraft with N87AC

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N87AC before.

- [Cancelled 2019-01-24](https://openairdocs.org/deregistered/N87AC-2019-01-24): Gyro Revolution KALLITHEA, S/N K0006. Exported to Bulgaria. Owner: [Gyro Revolution LLC](https://openairdocs.org/faa-owner/GYRO%20REVOLUTION%20LLC), [Levittown, NY](https://openairdocs.org/faa-place/NY/Levittown)
- [Cancelled 2011-06-06](https://openairdocs.org/deregistered/N87AC-2011-06-06): Bowden Ted AVID AMPHIBIAN, S/N 32. Assigned (import), pending cancellation

## Related

- Other Niki Rotor KALLITHEA aircraft: https://openairdocs.org/model/niki-rotor-kallithea/aircraft.md
- The Rotax 915 IS series engine: https://openairdocs.org/engine/rotax-915-is-series.md

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