NSN 5962-01-147-5966 is a Singer / Army Aviation microcircuit identified by part number 11503784-1. Markings recorded on the existing item and listing include SINGER, 8 8818, A574A550-101, 8552, and serial number 1372. This is specialized military surplus for buyers matching the exact NSN, part number, and package markings for maintenance, restoration, or legacy equipment support. TECHNICAL INFORMATION NSN: 5962-01-147-5966 Manufacturer / Marking: Singer Part Number: 11503784-1 Item: Microcircuit Additional Markings: 8 8818; A574A550-101; 8552; Serial No. 1372 Using Service: U.S. Air Force Unit of Issue: EA Shelf Life: Non-deteriorative / no shelf-life applies Controlled Inventory: Unclassified ESD Code: B - ESD-sensitive item Precious Metals Indicator: G - item contains gold DEMIL Code: Q - Commerce Control List / trade-security controls apply Condition: New old stock military/government surplus Photos and package markings should be used for final identification. Buyer should verify the exact NSN, part number, package configuration, and any applicable trade or export requirements before purchase. Sold by Sumspace, operated by Southern Utah Makerspace Inc., a 501(c)(3) nonprofit in St. George, Utah.