(CNN) -- A twin engine Beech King Air C90 plane made a nose-down, emergency landing at a Fort Worth, Texas, airport Thursday after the nose gear failed to deploy properly as the plane made its landing approach, an FAA spokesman said.
The turbo-prop aircraft is a Federal Aviation Administration fleet plane used for inspector training and other missions, spokesman Lynn Lunsford said. It was on a routine training flight at the time of the incident, he said.
An FAA inspector -- who conducts "check rides" with pilots -- was getting his own flight check, as required by the FAA, Lunsford said. He had just finished the flight and was preparing to land when he discovered the plane's nose gear would not extend. The pilots contacted the airport operations center and the plane manufacturer to troubleshoot the problem. When they were unable to fix it, they decided to land on the main gear and keep the nose off the ground as long as possible.
After the plane skidded to a halt on a runway at Alliance Airport, emergency workers hosed down the nose of the plane and helped two men make the final steps from the cabin stairs, suspended several feet above the runway.
The plane's two occupants weren't injured, Lunsford said, and investigators have not yet determined the cause of the mechnical problem.
CNN's Mike M. Ahlers contributed to this report.