As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE WORKING IN THE TAIL COMPARTMENT, THE MECHANIC NOTICED CORROSION ON A CLAMP ON BLEED AIR LINE 1159AC-20023-1 WHERE IT CONNECTS TO BLEED AIR LINE 1159AC-20044-7. CLOSE VISUAL INSPECTION REVEALED THE CLAMP TO BE SEVERELY CORRODED AND READY TO FAIL.