Boeing 40-33, Airport Road, Everett, Snohomish County, Washington, 98204, United States
Boeing Commercial Airplanes
Air Data News[1]: 'On May 15, 1995, United Airlines became the launch customer of the Boeing 777, receiving the first-ever production aircraft'; NZ's CAA says 'the first customer delivery was to United Airlines'. AP Archive footage dated 17 May 1995 shows the delivery ceremony at the Museum of Flight, which is why some sources say 17 May; the handover itself was 15 May.
Boeing handed United Airlines the first production 777, a 777-200 registered N777UA, on 15 May 1995 at Everett, making United the launch customer in service.