As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HOUSING HAS VISIBLE LEAKAGE AT BASE OF FILTER BOSS JUST BELOW THE PRESSURE PORT (P1 OR 4) DUE TO CRACKING. STRESS CRACKING/DESIGN FLAW AT MANUFACTURING. C/W CMM 27-10-01, TEMPORARY REV NR 27-07 UNTIL EXISTING LOWER PISTON HOUSING ASSY IS REPLACED WITH NEW 41007178-102.