FAA · Supplemental Type Certificate
STC SA2242CE
Operation of airplane on unleaded auto gasoline, 87 minimum antiknock index and leaded auto gasoline, 88 minimum antiknock index (RON+MON) /2 per ASTM Specification D-439. Intermixing with aviation gasoline also approved.
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 (1)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗