As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE COMPLYING WITH SB A601-0556 (SPECIAL CHECK/ REWORK WING ANTI-ICING SYSTEM) FOUND THAT THE RIGHT WING HAD THE WRONG BLEED AIR COUPLING WITH THE PROPER PART NUMBER STAMPED ON IT. IT APPEARS THIS PART WAS MADE FOR THE LEFT WING WITH THE RIGHT WING MARKING.