LLETIN MOS HRS/MSC - ENC SB 72-0129 RI NO.2 ENGINE -SPARE PARTS RELEASE FOR CFM56-7B ENGINES. SERVICE BULLETIN MOS HRSIMSC - ENC SB 72-0130 NO.2 ENGINE - STARTER GEARSHAFT REPLACEMENT. SERVICE BULLETIN NOT APPLICABLE - BASED ON THE L5 STARTER GEARSHAFT SERIAL NUMBER MOS HRS/MSC - ENC 7-Insufficient Inform