A supplemental type certificate (STC) is an FAA approved major modification or repair to an existing type certified aircraft, engine or propeller. As it adds to the existing type certificate, it is deemed 'supplemental'.
Read more about Supplemental Type Certificate: Purpose, Advantages, Form, Regulation
Famous quotes containing the words type and/or certificate:
“One type of rice nourishes one hundred types of people.”
—Chinese proverb.
“God gave the righteous man a certificate entitling him to food and raiment, but the unrighteous man found a facsimile of the same in God’s coffers, and appropriated it, and obtained food and raiment like the former. It is one of the most extensive systems of counterfeiting that the world has seen.”
—Henry David Thoreau (1817–1862)