This is a sources sought notice for market research to identify capable sources for a potential firm-fixed-price contract. The requirement is for a contractor to obtain an FAA Supplemental Type Certificate (STC) amendment to extend NOAA's NGAS system to Boeing 737-800 or 737 MAX aircraft, including non-recurring engineering, hardware kitting/provisioning, and on-site survey and installation support. The work is structured as a base task for STC amendment and verification, with options for hardware kitting and on-site installation support. The anticipated period of performance is September 21, 2026 through September 20, 2027 for the base task, with options running September 21, 2027 through September 20, 2028; award is estimated on or before September 21, 2026. The applicable NAICS code is 541330 with a size standard of $25.5 million.