# N311RT: 2003 Cosmos PHASE 2

- Status: Valid registration
- Airframe: [Cosmos PHASE 2](https://openairdocs.org/model/cosmos-phase-2) (registry code 05901FK, 2 seats)
- Engine: [Rotax 618](https://openairdocs.org/engine/rotax-618) (registry code 55578)
- Serial number: B21476
- Year built: 2003
- Type: Weight-shift-control
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: June 20, 2008
- Certificate issued: April 7, 2014
- Expires: April 30, 2030
- Mode S code: A34C11
- Registered owner: [Kempler P David](https://openairdocs.org/faa-owner/KEMPLER%20P%20DAVID)
- Location: [Incline Village, NV](https://openairdocs.org/faa-place/NV/Incline%20Village)
- Owner type: Individual
- Owner's area on the map: 39.2413° N, 119.9383° W: Placed by OpenAirDocs at the center of ZIP code 89450, 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=311RT
- Page: https://openairdocs.org/aircraft/N311RT

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 (Cosmos PHASE 2)

None in force.

### Matched by engine (Rotax 618)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA08CA173](https://openairdocs.org/ntsb/SEA08CA173), Aug 7, 2008: Cosmos Phase II (N311RT), Carson City, NV, substantial damage. Probable cause: The pilot's inadequate compensation for the crosswind conditions. Contributing to the accident was the crosswind.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20080807841799A](https://openairdocs.org/incident/20080807841799A), Aug 7, 2008: Cosmos PHASEII (N311RT), Carson City, NV, Substantial damage. (-23)The student pilot lost control during landing, touched down in the dirt and struck a berm approximately 100 feet from the runway centerline.

## 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 Cosmos PHASE 2 aircraft: https://openairdocs.org/model/cosmos-phase-2/aircraft.md
- The Rotax 618 engine: https://openairdocs.org/engine/rotax-618.md

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