As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING 2KU WIFI MODIFICATION AND DURING THE RADOME INSTALLATION PER GOGO DRAWING D18470-22207 REV. C AT FS 620 BETWEEN S-3R AND S-4R, MTC FOUND AN EXISTING INSULATION RETAINING STUD HOLE IN THE LOCATION WHERE THE TEE CLIP EXTRUSION (P/N: P31839-001) IS TO BE INSTALLED TO THE FRAME AND MOUNTED TO THE #6 RH INTERCOSTAL. C/W ERA 563980-14.