As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON THE WAY BACK TO BASE, A TRANSMISSION CHIP LIGHT ILLUMINATED ON THE CAUTION WARNING PANEL. REMOVED THE TRANSMISSION AND FREEWHEEL UNIT CHIP DETECTORS AND FOUND THE BOTTOM TRANSMISSION CHIP PLUG WITH METAL PARTICLES. THE MANUAL STATED IT WAS FLAKES AND CAUSED FOR THE TRANSMISSION TO BE REPAIRED OR REPLACED. FOLLOWING THE MANUFACTURER TECH PROCEDURES WERE PERFORMED, AND THE TRANSMISSION WAS DETERMINED TO BE UNSERVICEABLE. AIRCRAFT GROUNDED.