What was found
PRIOR TO THE INSTALLATION, VALVE UNIT WAS BENCH TESTED AND AN UNUSUAL NOISE/VIBRATION WAS NOTICED. SERVICE AD FSA 900/28-00/01 ADDRESSES THIS ISSUE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PRIOR TO THE INSTALLATION, VALVE UNIT WAS BENCH TESTED AND AN UNUSUAL NOISE/VIBRATION WAS NOTICED. SERVICE AD FSA 900/28-00/01 ADDRESSES THIS ISSUE.