As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING AN INSPECTION THE INLET FILTER WAS REMOVED. THE FILTER COVER (CAP) WAS FOUND CRACKED UNDER THE O-RING LOCATION ALL THE WAY AROUND. IT APPEARS TO HAVE BEEN OVER TORQUED. IT WAS NOT LEAKING AT THIS TIME. THE INLET FILTER ASSEMBLY WAS REPLACED. (TC NR 20070622006)