What was found
DURING HEAVY MAINTENANCE, CRACKS WERE FOUND ON 2 BULKHEADS. LOCATION IS APPROXIMATELY F.S. 3525, ROUGHLY LOCATED ON THE BULKHEADS BENEATH THE AFT TRANSMISSION SUSPENSION BAR ATTACHMENTS. THE TWO CRACKED BULKHEADS ARE ORIGINAL VERSIONS OF THE FOLLOWING P/N'S; 109-0390-24-133 REV.B1, 109-0330-51-103M01, 109-0390-24-109 REV.B1. THERE IS A REPAIR THAT HAS BEEN CREATED SPECIFICALLY FOR THIS KNOWN CRACKING LOCATION;ASRP-3C-A-53-36-02-01A-664A-D UPPER BULKHEAD AT STA 3525- SPECIAL REPAIR PROCEDURE.