What was found
LOUD CHATTERING NOISE COMING FROM FILTER HEAD WHEN MOTORING ENGINE - NOTE: CHATTERING OCCURS ON SPOOL DOWN AFTER MOTORING TO 10% N1. REPLACED FILTER HOUSING ASSEMBLY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOUD CHATTERING NOISE COMING FROM FILTER HEAD WHEN MOTORING ENGINE - NOTE: CHATTERING OCCURS ON SPOOL DOWN AFTER MOTORING TO 10% N1. REPLACED FILTER HOUSING ASSEMBLY.