A heavily modified Boeing 747-referred to by the military as a VC-25A-that has flown U.S. presidents around the world for 35 years has likely operated as Air Force One for the last time.

Shortly after President Donald Trump returned to Washington, D.C., from France early Thursday, two top White House officials posted tributes to the jet.

"Well done, good and faithful servant," communications director Steven Cheung wrote on X above a picture of the parked aircraft. He captioned the image, "The Last Ride."

White House deputy chief of staff Dan Scavino shared a video of the airplane on the ground, showing off its wings, landing gear, and engines.

"I have been fortunate to fly around the world on this iconic plane for 5 1/2 years-of the 35 years it has been serving U.S. Presidents," Scavino wrote. "Thank you."

The White House itself has not commented on the jet's potential phaseout.

The aircraft that flew Trump back to the U.S. on Thursday is one of two VC-25As used as Air Force One. The other has been parked in Greenville, Texas, since June 2, according to CNN.

Trump has complained openly about the quality and age of the two aircraft since his first term as president. Boeing is building two replacements-based on the 747-8 and known as VC-25Bs-but the project is years behind schedule, with deliveries now slated for 2028.

That means the president will use a 747-8 donated to him by the Qatari government in the interim. The aircraft, which was once owned by the prime minister of Qatar, was transferred to the U.S. Air Force last year and has been undergoing modifications and security enhancements at a facility in Texas.

Despite initial predictions that it could take years to equip the aircraft with required communications systems and defenses, the jet is on track to enter service this summer, according to the most recent update from the Air Force.

The military now refers to the Qatari jet as the VC-25B Bridge.

The VC-25As will remain an integral part of U.S. aviation and presidential history, having served every president since George H.W. Bush. They were also used to transport the bodies of Ronald Reagan, Gerald Ford, George H.W. Bush, and Jimmy Carter to and from their state funerals in Washington.

The type reportedly is equipped with defenses against anti-aircraft missiles, eavesdropping devices, and even the electromagnetic disruption caused by a nuclear blast. It has aerial refueling capability and can perform certain electronic countermeasures, such as jamming enemy radar.

The front part of the aircraft is informally referred to as the "White House," as it contains the president's suite and private office. Though the capability has never been used, the president can address the nation from the room. There is also a conference room that can be used like the Situation Room in the White House.

Presidents made modifications to the jets based on their needs and tastes. George W. Bush famously added a treadmill during his first term in office.

The Air Force has said the VC-25As will remain part of the presidential airlift fleet, but their intended function has not been made public.