Because that was the longest period of time that the company would agree to. That’s it. It also used to apply only on the first day of a reserve block. It was originally intended to let a commuter get to base on the first day with their phone off. It had no bearing on SC at any other time.

The trade is the pilot can disappear for a bit and the company then gets a limit that doesn’t otherwise exist. Everything else is just speculation or assumptions.