As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT HIGH POWER SETTINGS (I.E TAKE OFF ROLL) RIGHT PACK MAKES A VERY LOUD HIGH PITCH NOISE. DEFERRED RT PACK SYS PER MEL 21-51-1. DMP C/W. PLACARD INSTALLED. THIS CREATES M796076.R/R R/H RE-HEATER ASSY REF AMM 21-51-07-404-014. LEAK CHECK GOOD. ORIG SUB DATE: 11/23/2022