Jet/Long Ranger/206
Flight Crew Air Transport Pilot (ATP); Flight Crew Rotorcraft; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 50; Flight Crew Total 5500; Flight Crew Type 350
Communication Breakdown
Conflict Airborne Conflict
Flight Crew Took Evasive Action
Human Factors
Was Medevac code aircraft talking to all traffic vicinity JWY. Advised I would be west of runway northbound all traffic please use east traffic to allow medevac code aircraft through area without conflict. One aircraft; a Cessna 172; did not initially respond to radio and turned toward us from our 10 o'clock position. I continued to make radio calls alerting Cessna to our position on his right. We were on a direct converging path. When it was determined he was not going to yield I broke right and down away from the aircraft. The pilot would not come back on the radio. Several other aircraft in the pattern said he was talking on the radio fine prior to that.
Medevac helicopter pilot reports requesting JWY traffic make east traffic pattern to allow him to pass through on the west side at pattern altitude with a patient. One C172 pilot does not respond resulting in a conflict requiring evasive action by the reporter.