FAA · Supplemental Type Certificate
STC SA755EA
Installation of polyurethane Reticulated Foam in the aircraft's integral and collector fuel tanks in addition to check valves in the fuel lines between the integral tanks and the collector and sediment tanks.
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 ↗