An Air Force transport that flew Vice President Joe Biden to northern Arizona on Friday remained at the Flagstaff airport on Tuesday because of an engine problem.

A spokesman for the 89th Airlift Wing at Andrews Air Force Base in Maryland says the plane, an Air Force version of a Boeing 757 jetliner, ingested some type of debris while landing.

Maj. Joel Harper says the plane landed normally and nobody noticed anything until a routine post-flight inspection.

Harper says the plane was still being checked out Tuesday. He didn't immediately know when it would leave Flagstaff.

Biden returned to Washington on a different Air Force transport. He was in Arizona to speak at a McCain Institute forum Friday evening in Sedona alongside U.S. Sen. John McCain, R-Ariz.