The accident is now under investigation by the NTSB and FAA (Federal Aviation Administration). From left, Rico Caruso, Air Methods pilot; Greg Rosenthal, flight paramedic and Klint Mitchell, flight nurse.
Ascension said ground and air medical transport has been suspended until further notice. Three occupants, including the pilot were on board the aircraft; all three occupants were found deceased. The units serve all Northern Wisconsin Ascension facilities including Good Samaritan Hospital of Merrill.
The FAA is sending a team to help with an investigation led by the National Transportation Safety Board.
The Ascension Wisconsin Spirit Air Medical services remain grounded. The crash occurred late Thursday night about 150 miles northwest of Green Bay in an unlighted rural area after having dropped off a patient in Madison, Wisconsin.
A witness who drove search crews to the scene on an amphibious all-terrain vehicle says the chopper went down in a heavily wooded area with high ridges and some swamps. It is also unknown exactly how many people were on Board the helicopter at the time of the crash.
The helicopter lost contact with a GPS tracking system used by the operator at 10:43 p.m., Knudson said, and crashed in a wooded area near the Bearskin State Trail and South Blue Lake.
The sheriff's office referred questions from The Associated Press to Ascension Health, which didn't immediately respond to calls and emails Friday morning.
Oneida County dispatchers were alerted to a missing air ambulance approximately 11:22 p.m. April 26.