What was found
DURING REPAIRS OF FUEL LEAK IN THE TAIL TANK CORROSION WAS FOUND IN THE AREA OF BARREL NUT HOLE 27 RR SIDE. REMOVED BOLT AND BARREL NUT PER SB MD11-55-023 REV 3, CORROSION WAS REMOVED IAW OPTION 2 PAGE 38 OF REF SB. A TWO (2) STAGE APPROVAL PROCESS WAS USED FOR THIS PROCESS, THE FIRST STAGE IS A TEMPORARY AMOC REPAIR TO AD 2003-22-08, PAR A WITH A PERMANENT REPAIR DUE WITHIN 24 MONTHS NOT TO EXCEED 07-14-2014. REF AMOC APPROVAL IDENTIFCATION # (CHA-CHA-12-0010-08B - 14 JUL-2012, BOEING COMMERCIAL AIRPLANE.