What was found
LOUD BANG FROM REAR OF A/C PRESS BUMP FELT. REMOVED AND REPLACED AIR CONDITIONING SYS AIR CK VALVE IN REF TO AMM 21-22-03-2. OPS CK NORM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOUD BANG FROM REAR OF A/C PRESS BUMP FELT. REMOVED AND REPLACED AIR CONDITIONING SYS AIR CK VALVE IN REF TO AMM 21-22-03-2. OPS CK NORM.