The Federal Aviation Administration (FAA) has disclosed that it will investigate an incident involving a Delta Air Lines Boeing 737-900ER, which had to return to Tucson, Arizona on April 14. According ...

United Airlines has a huge Boeing 737 fleet of almost 540 aircraft consisting of both the 737NG (Next Generation) and 737 MAX series. With its 737 MAX fleet currently at around 210 airframes, the ...