PPLICABLE- SUPERSEDED 72-0146 MOS FIRSAISC - ENC SB 72-0139 NO.2 ENGINE -SPARE PARTS RELEASE. SERVICE BULLETIN MOS HRSAISC - ENC SB 72-0140 NO.2 ENGINE - BONDED CAUTION PLATE ON COVER. SERVICE BULLETIN MOS HRSAISC - ENC SB 72-0140 R1 NO.2 ENGINE - BONDED CAUTION PLATE ON COVER. SERVICE BULLETIN MOS HRS