Modern airliners are essentially flying computers. The electrical system is designed with layers of redundancy to prevent a total blackout.
The Jeppesen PDF resource on transport category aircraft systems is available for download or online access through Jeppesen's website or through authorized aviation training providers. transport category aircraft systems jeppesen pdf
This is the most critical chapter for type rating students. Modern airliners are essentially flying computers
: Auxiliary Power Units (APUs), pneumatic systems, and environmental control. and environmental control.