As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE ANTI-ICE VALVE COME IN OUR MRO FOR A REPAIR. DURING THE INCOMING INSPECTION, A FLAT WASHER IS FOUND AS NOT IAW THE IPC. THE WASHER INSTALLED IS 0.063" WHILE THE MAXIMUM AUTHORIZED IS 0.010". THE ANTI-ICE VALVE WAS REPAIRED BY OUR SHOP IAW VCMM 30-21-42 AND THE WASHER REPLACED BY A GOOD ONE.