ACK Avionics Technologies, Inc., headquartered at 3350 Scott Blvd, Building 15 in Santa Clara, CA, specializes in the design, manufacturing, and support of FAA- and internationally TSO-certified avionics including emergency locator transmitters (ELTs) and altitude encoders. Founded in 1972 by Mike Akatiff, the company transitioned from motorcycle parts to aviation in 1988 and has since produced hundreds of thousands of reliable units with no airworthiness directives or safety recalls. Their products carry approvals not only from the FAA but also from EASA, Transport Canada, Brazil’s ANAC, and Japan’s JCAB, and are manufactured under stringent FAA quality and regulatory oversight.