What was found
(CAN) CLIP, ATTACHING THE WIRE TO THE BRUSH SET IS HELD TOGETHER WITH A RIVET. THE RIVET HEAD BROKE CAUSING A BAD CONTACT CREATING NOISE IN THE PILOTS HEADSET.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) CLIP, ATTACHING THE WIRE TO THE BRUSH SET IS HELD TOGETHER WITH A RIVET. THE RIVET HEAD BROKE CAUSING A BAD CONTACT CREATING NOISE IN THE PILOTS HEADSET.