Yesterday, 08:29 AM
Many years ago, I operated a turboprop with an electrical system that was powered by three busses. The were titled the essential bus, the main bus, and the non-essential bus.
The essential bus powered most of the captain's instruments, the main bus powered a lot of the systems, and the non-essential bus powered the copilot's instruments.
It was humorously pointed out that the copilots rode the non-essential bus to work.
Collins will certainly be riding the non-essential bus to work.