# N105WZ: 2016 Michael L Robbins QUADCITYCHALLENGERII

- Status: Valid registration
- Airframe: [Michael L Robbins QUADCITYCHALLENGERII](https://openairdocs.org/model/michael-l-robbins-quadcitychallengerii) (registry code 05635KT, 2 seats)
- Engine: [Rotax 503ULDCDI](https://openairdocs.org/engine/rotax-503uldcdi) (registry code 55568)
- Serial number: CH20499-1873
- Year built: 2016
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Quad City Ultralight Acft Corp CHALLENGER II
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 21, 2016
- Certificate issued: September 23, 2026
- Expires: September 30, 2033
- Mode S code: A01953
- Registered owner: [Morrison Malcolm B](https://openairdocs.org/faa-owner/MORRISON%20MALCOLM%20B)
- Location: [The Villages, FL](https://openairdocs.org/faa-place/FL/The%20Villages)
- Owner type: Individual
- Owner's area on the map: 28.9223° N, 81.9993° W: Placed by OpenAirDocs at the center of ZIP code 32162, 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=105WZ
- Page: https://openairdocs.org/aircraft/N105WZ

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 (Michael L Robbins QUADCITYCHALLENGERII)

None in force.

### Matched by engine (Rotax 503ULDCDI)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N105WZ.

## FAA accident and incident reports

None matched to N105WZ.

## Service difficulty reports (1)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 2017FA0000009](https://openairdocs.org/sdr/2017FA0000009), Jan 1, 2017: BEARING. FAILED. WHILE IN CRUISE CONDITION AT 5500 RPM THE ENGINE STARTED TO SLOW DOWN, THE CRAFTS AUXILIARY FUEL PUMP WAS STARTED. THE ENGINE CONTINUED TO LOSE RPM AND STOPPED 

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Michael L Robbins QUADCITYCHALLENGERII aircraft: https://openairdocs.org/model/michael-l-robbins-quadcitychallengerii/aircraft.md
- The Rotax 503ULDCDI engine: https://openairdocs.org/engine/rotax-503uldcdi.md

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