Hundreds of aircraft have phased arrays onboard. See this wikipedia article: https://en.m.wikipedia.org/wiki/Active_electronically_scanned_array https://en.m.wi

Hundreds of aircraft have phased arrays onboard. See this wikipedia article: https://en.m.wikipedia.org/wiki/Active_electronically_scanned_array https://en.m.wikipedia.org/wiki/Active_electronically_scanne... Specifically, I believe the one on the 737 is the Rockwell Collins WXR-2100.