As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PL FOR CYCLIC BACK PRESSURE CAUSING RESISTANCE TO PILOT INPUT. PATIENT WAS PICKED UP, ENROUTE, WHEN THE PILOT FELT HIS CYCLIC INPUT HAD REARWARD PRESSURE. PILOT MADE PL AT A HOSPITAL WITHOUT INCIDENT. UPON MECHANICS INSPECTION FOUND COLLECTIVE SERVO LEAKING. SERVO REPLACED AND OPERATIONAL CHECK NORMAL.