As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE HPT SECOND STAGE ROTATING AIR SEAL PROBE BOSS WAS DIFFICULT TO REMOVE. REQUIRED PRYING AND TWISTING TO REMOVE. COULD NOT FULLY INSTALL NEW UNIT. BOSS HANGS UP ON THE LAST INCH OF INSTALLATION. BORESCOPED HOLE. NO DEBRIS FOUND. REPLACED TCA PROBE AND BOSS.