ringmaruf
Veteran
They would be denied anyway....deadheading crews do not ride jumpseat. Not many will sit on an uncomfortable jumpseat when they contractually are entitled to a real seat.
I flew PSA on PHL-DTW a month or two ago, and the flight was completely full. Then two space-positive deadheading pilots showed up. The agent was ready to bump two people, but the deadheading Captain volunteered to sit in the jumpseat so that only one person needed to be bumped.