First off, apologies if this has been covered but I didnt find anything after a search.

In Klingon Armada AE each drone rack has a capacity of 12 which indicates that each rack has three flights of four drones each.  Contrary to this, the same rule section suggests that each rack carries a single flight (KLA AE Pg 31 under drones).  Which is correct?

How long will drones remain in space before running out of fuel?

Thanks