FYI: EMS helicopters are required to have a Flight Data Monitoring System installed per Part 135. Its not the same as a FDR but it records a number of data points that can be downloaded and reviewed graphically with some recording ambient cockpit audio and video. A number of EMS operators also have actual CVR-FDRs installed as well so there should be plenty of data to see what the aircraft was doing prior to the incident. And yes the PW207 does have a field-downloadable DCU that will give engine data in various formats depending on the software used to view the data.