Why do we need two pilots in a commercial aircraft?

Quite simple actually, its because of safety.

In various industries a concept called redundancy is quite common. In aviation redundancy is a household concept. It basically means having Plan A and plan B.

All the systems in commercial aircrafts are designed in this fashion. If one fails, the other takes over. It's a neat setup when you think about it.

Millions of dollars are spent on making this happen. Unlike cars, aircraft designers make sure to minimize technical dis-functionality.

When technical errors are low; the only thing left are human errors. The error a pilot do unconsciously can have disastrous results. Such is the case we have been witnessing with crashes in the last decade.

In order to reduce human errors, a second conscious is kept. Having two brains in the cockpit is better than one and so is the reason why we have two pilots in commercial aircrafts.

Until next time.

Stay cool.

Cheers.

CK