This proposed AD is similar to four existing ADs. AD 2010-05-13, Amendment 39-16223 ( 75 FR 13225, March 19, 2010), applies to Boeing Model 737-100, -200, -200C, -300, -400, and, -500 series airplanes. AD 2007-19-07, Amendment 39-15198 ( 72 FR 60244, October 24, 2007), applies to certain Boeing Model 757-200, -200PF, and, -200CB series airplanes. AD 2009-24-08, Amendment 39-16096 ( 74 FR 62217, November 27, 2009) applies to certain Boeing Model 777-200, -200LR, -300, and, -300ER series airplanes. AD 2010-06-16, Amendment 39-16241 ( 75 FR 12670, March 17, 2010) applies to certain Boeing Model 767 series airplanes. Those ADs require inspections to detect scribe lines in the fuselage skin at certain lap joints, around decal locations, external repair doublers, and other areas; and related investigative/corrective actions if necessary. Those actions resulted from reports of fuselage skin cracks adjacent to the skin lap joints on airplanes that had scribe lines.