# N121LF: 2007 Flight Design CTSW

- Status: Valid registration
- Airframe: [Flight Design CTSW](https://openairdocs.org/model/flight-design-ctsw) (registry code 0600001, 2 seats)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: 07-06-22
- Year built: 2007
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: September 24, 2007
- Certificate issued: November 21, 2016
- Expires: November 30, 2029
- Mode S code: A05869
- Registered owner: [Gibson James L](https://openairdocs.org/faa-owner/GIBSON%20JAMES%20L)
- Location: [Allegan, MI](https://openairdocs.org/faa-place/MI/Allegan)
- Owner type: Individual
- Owner's area on the map: 42.5319° N, 85.8704° W: Placed by OpenAirDocs at the center of ZIP code 49010, 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=121LF
- Page: https://openairdocs.org/aircraft/N121LF

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 (Flight Design CTSW)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N121LF.

## FAA accident and incident reports

None matched to N121LF.

## Reports on N121LF not matched to an aircraft (1)

They name N121LF, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19990217011379I](https://openairdocs.org/incident/19990217011379I), Feb 17, 1999: Bolkms BK117B1 (N121LF), Millersburg, PA. Aircraft departed sunbury hospital at 1819 hours enroute to MDT IFR. At 4000 feet, pilot noticed odor in cabin. Shut off heater. Declared emergency with…

## 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.

## Service difficulty reports on N121LF not matched to an aircraft (1)

They name N121LF, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 99ZZZX1246](https://openairdocs.org/sdr/99ZZZX1246), Feb 18, 1999: EMS INTERIOR. FAILED. AIRCRAFT ON RETURN FLIGHT WITH PATIENT ONBOARD. CREW NOTICED UNUSUAL ODOR AND LIGHT HAZE OF SMOKE IN CABIN/COCKPIT. PILOT PERFORMED PRECAUTIONARY LANDING WITHOU

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Flight Design CTSW aircraft: https://openairdocs.org/model/flight-design-ctsw/aircraft.md
- The Rotax 912ULS series engine: https://openairdocs.org/engine/rotax-912uls-series.md

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