# N4109K: 1984 Eipper Quick Silver MX Q-MX

- Status: Valid registration
- Airframe: [Eipper Quick Silver MX Q-MX](https://openairdocs.org/model/eipper-quick-silver-mx-q-mx) (registry code 05904S6, 1 seats)
- Engine: [Rotax 377](https://openairdocs.org/engine/rotax-377) (registry code 55581)
- Serial number: 5592
- Year built: 1984
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: January 30, 2008
- Certificate issued: January 25, 2008
- Expires: November 30, 2029
- Mode S code: A4D7BD
- Registered owner: [Barlow William R](https://openairdocs.org/faa-owner/BARLOW%20WILLIAM%20R)
- Location: [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego)
- Owner type: Individual
- Owner's area on the map: 32.8096° N, 117.1342° W: Placed by OpenAirDocs at the center of ZIP code 92123, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4109K
- Page: https://openairdocs.org/aircraft/N4109K

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 (Eipper Quick Silver MX Q-MX)

None in force.

### Matched by engine (Rotax 377)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4109K.

## FAA accident and incident reports

None matched to N4109K.

## 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 N4109K

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4109K before.

- [Cancelled 1950-06-27](https://openairdocs.org/deregistered/N4109K-1950-06-27): North American NAVION, S/N NAV-4-1109. Owner: [Haas L Ernest](https://openairdocs.org/faa-owner/HAAS%20L%20ERNEST), [Hermosa Beach, CA](https://openairdocs.org/faa-place/CA/Hermosa%20Beach)

## Related

- Other Eipper Quick Silver MX Q-MX aircraft: https://openairdocs.org/model/eipper-quick-silver-mx-q-mx/aircraft.md
- The Rotax 377 engine: https://openairdocs.org/engine/rotax-377.md

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