A possible mechanical problem forced an Eagle Med helicopter to make an unscheduled landing Tuesday night at Ottawa Municipal Airport, 2178 Montana Road.

Personnel from the Ottawa police and fire departments were dispatched to the scene at 7:26 p.m. Tuesday, where the helicopter flight crew told first responders hydraulic warning lights prompted them to land and shut down the craft. The air ambulance was in the process of transferring a patient to the University of Kansas Medical Center, Kansas City, Kan., Lt. Jared Shinkle, with the Ottawa Fire Department, said in his written report of the incident.

The patient, who was reported to be in stable condition, was loaded into a Franklin County ambulance and transported to the KU medical center.

No smoke or fire was visible from the craft, Shinkle’s report said. Ottawa firefighters inspected the helicopter and found no sign of abnormalities. A Eagle Med flight mechanic was dispatched to the scene to check the helicopter’s hydraulic system before it resumed its flight.