# N4399J: 2000 Shaffer William C QUICKSILVER MX II SP, registration cancelled 2014-09-08

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 8, 2014
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Shaffer William C QUICKSILVER MX II SP](https://openairdocs.org/model/shaffer-william-c-quicksilver-mx-ii-sp) (registry code 05904QC)
- Engine: [Rotax 582DCDI](https://openairdocs.org/engine/rotax-582dcdi) (registry code 55562)
- Serial number: 3916887
- Year built: 2000
- Type of aircraft: Glider
- Engine type: 2 cycle
- Airworthiness: Experimental, operating light-sport, previously under 21.190
- Airworthiness date: January 6, 2010
- Certificate issued: December 20, 2007
- Last registry action: December 20, 2007
- Mode S code: A54829
- Owner when cancelled: [Shaffer William C](https://openairdocs.org/faa-owner/SHAFFER%20WILLIAM%20C)
- Location: [Fort Bragg, CA](https://openairdocs.org/faa-place/CA/Fort%20Bragg)
- Owner type: Individual
- Owner's area on the map: 39.4454° N, 123.6723° W: Placed by OpenAirDocs at the center of ZIP code 95437, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4399J
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4399J
- Page: https://openairdocs.org/deregistered/N4399J-2014-09-08

From the FAA registry file of October 31, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Shaffer William C QUICKSILVER MX II SP: https://openairdocs.org/model/shaffer-william-c-quicksilver-mx-ii-sp.md

## 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 WPR10LA271](https://openairdocs.org/ntsb/WPR10LA271), Jun 1, 2010: Shaffer William C Quicksilver MX II SP (N4399J), Visalia, CA, substantial damage. Probable cause: The pilot's inadequate compensation for the gusty crosswind conditions and failure to maintain runway alignment while landing.

## 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 20100601005359A](https://openairdocs.org/incident/20100601005359A), Jun 1, 2010: Shaffer Wil QUICKSILVER (N4399J), Visalia, CA, Substantial damage. On initial approach to land onto a dirt road, crosswinds were encountered. The PIC initiated a go around and set up to land into the wind on to an adjoining…

## Other aircraft with N4399J

- [Cancelled 1982-12-08](https://openairdocs.org/deregistered/N4399J-1982-12-08): Piper PA-28-140, S/N 28-22791, built 1967. Owner: [Dunn Douglas R](https://openairdocs.org/faa-owner/DUNN%20DOUGLAS%20R), [Modesto, CA](https://openairdocs.org/faa-place/CA/Modesto)

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