Robinson R44
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Rotorcraft
Flight Crew Last 90 Days 50; Flight Crew Total 2750; Flight Crew Type 2000
Aircraft Equipment Problem Critical
Flight Crew Landed in Emergency Condition; Flight Crew Diverted
Aircraft
Made an unscheduled landing at ZZZ was I was having an issue with transponder as well as was noticing uncommanded yaw; strange vibration and surging manifold pressure. I decided to go ahead and land at nearest airport; which was ZZZ. Asked for direct approach to [FBO] and landed without issue.
Rotorcraft pilot reported diverting to nearest airfield after multiple system failures and engine problems.