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PICKENS, S.C. (AP) -- The Federal Aviation Administration is investigating what forced the pilot of a single-engine airplane to deploy a parachute that dropped the aircraft safely into a stand of trees in South Carolina.

TheCirrus SR22 remained Monday in the treetops in Pickens County where the plane landed Sunday evening.

FAA spokeswoman Kathleen Bergen says the plane with four passengers aboard was traveling from the Cobb County Airport in Georgia to Greensboro, N.C., when the pilot reported an engine problem.

There were no serious injuries.

Pickens County Emergency Management director Chuck Haynes says the plane comes with a built-in parachute. He says rescuers climbed to the plane with ladders and used ropes to secure the craft while the occupants were removed.