What was found
INSTALLED MODULE 3, FRESH OUT OF OVERHAUL. DURING OPS CHECKS A LOUD "HOWLING" WAS OBSERVED. ENGINE WAS SHUTDOWN, REMOVED AND SENT TO MFG FOR FURTHER INVESTIGATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
INSTALLED MODULE 3, FRESH OUT OF OVERHAUL. DURING OPS CHECKS A LOUD "HOWLING" WAS OBSERVED. ENGINE WAS SHUTDOWN, REMOVED AND SENT TO MFG FOR FURTHER INVESTIGATION.