As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DISASSEMBLY, THE BLEED VALVE COVER ASSY GUIDE PIN HAD COME OUT OF COVER. THE GUIDE PIN IS A PRESSED FIT INTO THE COVER. THE BORE FOR THE GUIDE PIN HAD BEEN ELONGATED AND THE COTTER PIN THAT HELPS TO SECURE GUIDE PIN WAS BROKEN. THE COVER IS DAMAGED BEYOND REPAIR.