As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT PACK OPERATING IN HIGH FLOW AT ALL TIMES. EXCESSIVE AIR NOISE. OUTFLOW VALVE 70% OPEN WITH RT PACK ON. PERFORMED BITE TEST ON RT CONTROLLER, NO FAULTS NOTED. PERFORMED OPS CHECK OF RT PACK IAW AMM 21-51-00. SYSTEM CHECKED NORMAL. NO LOUD NOISE HEARD. OK FOR SERVICE.