As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FREON COMPRESSOR DRIVE SHAFT HAS 300-HOUR INSPECTION INTERVALS. BEARING FAILED CAUSING DRIVE SHAFT TO SHEAR AT SPLINE END. DRIVE ASSY WAS 8.3 HOURS FROM NEXT INSPECTION. BEARING WAS OK AT LAST INSPECTION. TOTAL TIME ON BEARING WAS NOT KNOWN. SUBMITTER SUGGESTED DRIVE ASSY BEARINGS SHOULD BE REPLACED AT 2,000-HOUR INTERVALS. MIGHT SAVE REPLACING $700 SHAFT.