FAA · Supplemental Type Certificate
STC SA02718SE
The installation of a Pratt & Whitney PT6A-140AG engine, Avia propeller V508H/108B/A, fuel system and aerodynamic modifications on S2R-T34 and S2R-H80 airplanes, and installation of rudder aileron interconnect on S2R-H80 airplanes
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 (2)
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗