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CUMBERLAND, Maine

(AP) - LifeFlight officials are trying to determine the cause of a mechanical failure that forced a medical helicopter crew to make an emergency landing in Cumberland.



No one was injured when the helicopter landed hard in a field off Winn Road Tuesday afternoon. Officials say one of the chopper's two engines lost oil pressure as the crew was returning to Lewiston after transporting a patient to a hospital.



A pilot and two crew members were aboard.



LifeFlight officials say the crew landed the helicopter as a precaution and are well-trained for such emergencies. The aircraft wasn't damaged.



Mechanics are trying to determine why the engine lost oil pressure.



(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)


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