FAA · Supplemental Type Certificate
STC SA3-339
Installation of Wipaire Skis Inc. Model C-3000 (Aircraft Skis) (FluiDyne) (Federal) Main Wheel (either manually or hydraulically actuated) ski having a cross-wind wheel utilizing a 6.00-6 tire
What is an STC?
A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.
Applicable aircraft (3)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗