2017 Boeing 737-800

N8555Z is a Boeing 737-800, serial number 63600, built in 2017 and registered to Boeing Company that year before passing to Southwest Airlines Co in 2018, where it remains registered. Flight-tracking records list the aircraft under the livery name "Southwest Airlines (Tennessee One Livery)." The jet drew attention on June 18, 2024, when Southwest Flight 4069, operated by this aircraft, was en route from Las Vegas to Oklahoma City and received a low-altitude warning about nine miles from Will Rogers World Airport, with tracking data showing the plane descending to approximately 525 feet above ground level over the suburbs. An air traffic controller notified the crew, who initiated a go-around, and Southwest confirmed the flight landed safely and said it would cooperate with the FAA on a full investigation. The 737-800 variant itself was introduced by Southwest in March 2012 with a celebration at its Dallas maintenance hangar, and the airline took delivery of its final 737-800 in October 2018. In its most recently observed year the aircraft logged 1685 flights totaling 3182.1 hours, with chapters at KGEG, KVQQ, and an ongoing stay at KDAL.

Livery guess: Southwest Airlines (Tennessee One Livery). Flight-tracking record names this specific tail under that livery

1. N8555Z - Boeing 737-8H4 - Southwest Airlines - Flightradar24
2. FAA investigates Southwest Airlines flight low-altitude alert
3. The Boeing 737 Variant That Changed Southwest Airlines For Good