As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MTC INSTALLED 3-LUG SPACER PLATE STANDOFFS ON BS 867 FRAME PER WORK CARD 2120-01179-06 BUT WERE UNABLE TO ACHIEVE DIMENSIONS SHOWN ON DWG Q821A4200-59, FIGURE 13. REWORK SPACER PLATE INSTALLATION AT BS 867 FRAME PER ER/A 632402-14 REV IR. ASSOCIATED AA 2120-01179 ADDED FOR AC 3952.