Stephen Andrues brings unparalleled technical expertise to Ni-Cad Systems as Vice President and General Manager. With 40 years of specialized experience servicing nickel-cadmium aircraft batteries, Stephen holds the distinguished designation of FAA Designated Engineering Representative (DER), demonstrating his exceptional knowledge of aviation regulations and battery technology. His credentials include A&P mechanic certification and pilot licensing, providing comprehensive understanding of aircraft systems and operational requirements. Stephen has personally overseen the development and approval of over 30 FAA-PMA products, including second-source batteries, temperature sensors, and modification kits that provide cost-effective alternatives while maintaining full airworthiness compliance. His deep technical knowledge enables rapid problem-solving for complex battery issues, and his hands-on approach ensures that Ni-Cad Systems' Part 145 facility remains at the forefront of aviation battery technology. Stephen's expertise is invaluable to customers facing AOG situations, providing authoritative guidance that gets aircraft back in service quickly and safely.