As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE PROCESS OF REPAIRING CRACKS IN THE BULKHEAD AT STATION 176.5 ON BOTH THE LEFT AND RIGHT SIDE CRACKS IN THE LEFT CHANNEL P/N 50-420014-229 AND RIGHT CHANNEL P/N 50-420018-230, IN THE RADIUS AREA OF THE BEND ON THE SKIN SIDE OF THE CHANNEL. THE CRACK WAS ABOUT .5 INCH FORWARD OF BULKHEAD 176.5 TO ABOUT .5 INCH AFT OF BULKHEAD 176.5. THE CRACK WAS VERY DIFFICULT TO SEE AT FIRST. ONCE THE AREA WAS CLEANED IT APPEARED AS A VERY THIN PENCIL LINE.