FAA · Supplemental Type Certificate
STC ST09162SC
Installation of Trimble TNL-2100T(I/O) GPS equipment to drive Mecca pointers in passenger cabin. (747-3G1 S/N 23070)
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)
Certification basis — 14 CFR
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗