CREW UNION SETS PACT WITH PACIFIC SOUTHWEST <PSG> Pacific Southwest Airlines said it reached an agreement with the Southwest Crew Controllers Association needed to satisfy conditions of USAir Group's <U> proposed acquisition of PSA. PSA said this is the third of four unions agreement is needed with for USAir's acquisition to be consummated. Under the agreement, PSA crew controllers received assurances they will be provided with labor protective provisions and a seniority integration process.