ABOARD AIR FORCE ONE/ WASHINGTON, Feb 19 (Reuters) - U.S. President Donald Trump said on Wednesday he was not happy with planemaker Boeing BA.N and his administration might have to go a different route with Air Force One planes.

The Air Force One program may be further delayed until 2029 or years later, a senior administration official said, citing supply chain issues and changing requirements, after the White House said the project failed to deliver a new plane on time over the weekend.

President Donald Trump says he is considering buying used Boeing aircraft — perhaps from an overseas seller — to use as Air Force One when he’s aboard, as he fumes over the U.S. plane-maker’s delays in producing two specially modified ones for presidential use.

President Donald Trump said he is "not happy with the fact that it's taking so long" for Boeing to build the next Air Force One jetliner, which has been delayed.

CEO Kelly Ortberg on Thursday said Elon Musk, the head of its space business rival SpaceX, is "helping us a lot" in navigating through delays.

Boeing CEO Kelly Ortberg said at an analyst conference that SpaceX CEO Elon Musk is helping Boeing address issues that have delayed delivery of the new Air Force One jets.

Boeing has had six years of production problems, safety issues, delivery delays and unhappy buyers of its aircraft. But President Donald Trump’s anger at the delays for the next generation of Air Force One jets could result in a huge blow to what remains of the company’s prestige and finances going forward.

A month before Donald Trump took office, tech mogul Elon Musk flew to Port San Antonio to meet with Boeing’s CEO about Air Force One.

Two new Air Force One airplanes are at least three years away from being delivered to President Donald Trump, prompting him to request Elon Musk's assistance.

President Donald Trump has expressed frustration about delays of the specially-outfitted pair of 747s that will serve as the next Air Force One aircraft. Boeing CEO Kelly Ortberg has said the company is working with Trump's advisor Elon Musk to deliver the aircraft faster.

Kelly Ortberg, the CEO of Boeing, said he was working with the DOGE team to speed up delivery.

Boeing Co.’s chief executive officer said Elon Musk and his DOGE team are helping the planemaker work through bottlenecks that have caused the next fleet of Air Force One jets to fall years behind schedule.