A serious amount of documentation (available
here on page 118 of the PDF, and
here as a separate document) was churned out by the Test Division in trying to figure out why the high-gain antenna failed to lock up with the Apollo 13 spacecraft during the TV pass at 55 hours. In both documents, the specific cause of the antenna failure was not fully identified, although it did note that it was not a manufacturing defect and that the failure likely occurred after transportation from the manufacturing plant.
EECOM Sy Liebergot, listening in to INCO struggling to lock up the high-gain with the spacecraft, calls up the EPS personnel in his backroom to let them know how the high-gain antenna may have been broken - and it's a surprisingly simple explanation.
Even during the Apollo program, accidents did happen!
Link:
https://apolloinrealtime.org/13/?t=055:06:23&ch=16