A set of applications requesting a system or subsystem of microwave links which are related to the extent that they cannot or must not operate independently and so must all have the same grant date and construction deadline. A pack must first be registered in ULS in order to receive a Pack Registration Number; the Pack Registration Number is then entered on all applications to filed as part of the pack. (See Pending Pack Filing.)

a critical control point since it determines whether a MA pack is susceptible to external microbial contamination and air dilution of the gas mixture

Here, core components of air separation plants which have a positive effect on their efficiency.

The simultaneous purchase or sale of an equally weighted, consecutive series of four futures contracts, quoted on an average net change basis from the previous day's settlement price. Packs provide a readily available, widely accepted method for executing multiple futures contracts with a single transaction.