What happens when your pilots just don't get along? claims that there are "Do not pair" lists where someone can request not to work with another pilot.
For this reason, co-pilots, or first officers, have a way to quietly avoid flying with a captain they despise.
At the airline I work for, this subversive maneuver is known as “Do Not Pair.”
Here’s how Do Not Pair works:
When a first officer submits electronic bids for the next month’s flight schedule, he must enter the name of the undesirable captain into the computer bidding module.
As the bid is processed, the system makes certain the two pilot names are not paired on the same flight sequences.
Do such "Do not pair" systems exist?