FAA · Supplemental Type Certificate
STC SA1265NE
Installation of 2800 gallon auxiliary fuel tanks in front and rear belly cargo compartments. "PATS, Inc. Supplement No. 1 to the Boeing 737-269 Auxiliary Fuel Tank Installation Aircraft S/N 21206"
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 ↗