WASHINGTON (AP) - Departing Air Force Secretary Michael Wynne says the service will likely reopen bidding on a contract for building new air refueling tankers, giving the Boeing Co. another shot at the $35 billion project.

The lucrative contract originally went to Northrop Grumman and EADS, the parent company of Airbus. But the Government Accountability Office this week that found errors in the bid process, which has led to numerous calls for the contract to be reopened.

Wynne said the contract dispute between Boeing and Airbus planes will likely delay new air tankers that were planned to go into service in 2013.

He made his comments to reporters in Washington, D.C., on Friday - his last day in office. He was ousted two weeks ago by Defense Secretary Robert Gates.

Wynne says Air Force officials were disappointed and somewhat confused by the GAO report that found errors in the bid process. He says the Air Force will likely seek clarification before asking for new bids.

The planes are needed to replace an aging fleet of refueling tankers.

"Of course the Air Force will try desperately to hold onto" the 2013 target date "because of the age of our (current) fleet," Wynne told a small group of reporters.

"I will also say there's almost no way to do that in the face of this straightforward delay in the start date," he added. He noted that Northrop has put off groundbreaking for two facilities that would build the aircraft.

Timing is an important issue because the current fleet of aerial refuelers is growing decrepit. The fleet of refuelers is a critical link in the global reach of the Air Force, enabling fighters and bombers to operate over great distances and to remain on station for long periods over Iraq, Afghanistan and elsewhere.

The GAO found "a number of significant errors" in the Air Force's February decision to award the $35 billion contract to Northrop Grumman and its European partner. Boeing, the loser in the bidding, protested to the GAO.

Wynne was ousted two weeks ago by Defense Secretary Robert Gates, along with the top uniformed Air Force officer, Gen. Michael Moseley. Wynne is to be replaced starting Saturday by Michael Donley, who will be the acting secretary pending his confirmation by the Senate to be the permanent successor.

Wynne said he saw no possibility that the GAO could be made to alter its findings. And although its recommendation that the bidding be reopened is not binding on the Air Force, Wynne indicated that after studying the decision further, the Air Force likely would issue a new request for contract bids.

"We were very disappointed," by the decision, Wynne said in the Air Force's most extensive comments thus far on a GAO ruling that gives ammunition to Boeing supporters in Congress who have been seeking to block funding for the tanker deal or to force a new competition.

"The reason we are very disappointed I think is the intensity of effort that went into having a very open and a very transparent" competition between Boeing and Northrop, Wynne said. He spoke of "reshaping and revising" the competition, but he did not indicate that any final decisions had been made.

He described the ruling as "an opportunity perhaps to take a whole other look at the way that we offered, in other words the way we offered to buy" from the manufacturers who submitted contract bids.

Wynne said the Air Force is "somewhat confused by some of the wording" of the GAO ruling, and he said the service would seek clarifications before it proceeds with a new competition.