What was found
ON WALK AROUND FOUND A BLISTER ON BOTTOM OF FUSELAGE AT APPROXIMATELY 580. THE SKIN IS ALSO CRACKED BETWEEN 2 RIVET HOLES. C/W REPAIR ON ERA 545426-14, REV ORIG, SECT. I, PERM REPAIR. COMPARED PRI 545426-14, REV 6 TO ERA 545426-14, ORIG, NO DIFFERENCES FOUND.