Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL6743-01257-01 ITEM 91 found under Microcircuit Memory by Gec Marconi. The National Stock Number assigned to this part is 5962014405527, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PL6743-01257-01 ITEM 91.