As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL NEW AIRCRAFT ALL NEW REPLACEMENT COMPASSES DELIVERED IN APPROX THE LAST 1.5 YEARS HAVE DEVELOPED BUBBLES IN THE FLUID, REQUIRING REPLACEMENT. COMPASSES WITH BUBBLES USE TO BE A VERY RARE OCCURRENCE. HAVE REPLACED OVER 25 COMPASSES THIS YEAR. ALL LESS THAN 2 YEAR OLD.