As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACKS EXCESSIVELY LOUD DURING ALL PHASES OF FLIGHT. WORSE DURING THRUST CHANGES. OVER 80DB RECORDED IN CRUISE.(<P>PERFORMED OPS CHECK OF A/C PACKS IAW AMM 21-00-00. COULD NOT DUPLICATE DEFECT. </P><P>OSHA REQUIREMENTS ALLOW FOR 90 DB OF CONTINUOUS LOUDNESS FOR 08 HRS OF EXPOSURE.</P>)