Yes, the Rockwell Collins ALT-1000 is a fit and form replacement for the ALT-50A. The ALT-1000 includes extensive use of digital technology, end-to-end monitoring and critical level software verification. The ALT-1000 is a single unit designed in a 3/8 ATR short-low package.
ALT-1000 part number 822-1939-025 directly replaces both the ALT-50A part number 622-3201-001 and 622-3201-011.