What was found
WHILE PERFORMING LAP JOINT MODIFICATION PER AD 91-06-06, 2 INCH BY 6 INCH CORROSION WAS FOUND ON PRODUCTION STRAP AT BS 440 BETWEEN S-19R AND S-20R. REPAIRED DOUBLER PER BOEING DRAWING 65054572 AND ENGINEERING AUTHORIZATION EA S1387. A 2 INCH BY 7 INCH AREA OF CORROSION WAS FOUND ON STRINGER 19R AT BS 475. INSTALLED STRINGER SPLICE PER SRM 53-10-3 AND SRM 51-40-3. FOUND .6 INCH CRACK ON S-18L AT BS 500. REPLACED CRACKED SECTION PER SRM 53-0-3 FIG 1 DETAIL 1. ALSO, FOUND 1.2 INCH CRACK ON THE FUSELAGE SKIN ON S-18L AT BS 456. INSTALLED REPAIR DOUBLER PER SRM 53-30-3 FIG 3. REF 95ZZZW111. REF 95ZZZW112. REF 95ZZZW113.