# Shaffer William C QUICKSILVER MX II SP

- Type: Aircraft model (FAA registry)
- Registry code: 05904QC
- Manufacturer (registry): SHAFFER WILLIAM C
- Model: QUICKSILVER MX II SP
- Aircraft type: Glider
- Category: Glider
- Engines: 1 · 2 cycle
- Seats: 2
- Weight class: Up to 12,499 lb
- Certification: Light sport
- Registered aircraft: 0
- Page: https://openairdocs.org/model/shaffer-william-c-quicksilver-mx-ii-sp

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft

None registered with this model now.

## 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…

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Baker Rory W QUICKSILVER MX II SP](https://openairdocs.org/model/baker-rory-w-quicksilver-mx-ii-sp): 1 registered aircraft, registry code 05643AR
- [Jeneral John A QUICKSILVER MX IISP](https://openairdocs.org/model/jeneral-john-a-quicksilver-mx-iisp): 0 registered aircraft, registry code 05607YL
- [Delucca Roberto QUICKSILVER MX II SP](https://openairdocs.org/model/delucca-roberto-quicksilver-mx-ii-sp): 0 registered aircraft, registry code 05620EB
- [Sky Rider Ultralights QUICKSILVER MX II SP](https://openairdocs.org/model/sky-rider-ultralights-quicksilver-mx-ii-sp): 0 registered aircraft, registry code 05676HN
- [Tate Jerry QUICKSILVER MX II SP](https://openairdocs.org/model/tate-jerry-quicksilver-mx-ii-sp): 0 registered aircraft, registry code 05902JV

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.