PSA pilots approved contract changes.

Pacific Southwest Airlines won needed contract modifications from its pilots’ union, but the airline has yet to negotiate changes in Teamsters’ contracts that are necessary before USAir’s pending $400-million acquisition of PSA can be completed. The Air Line Pilots Assn. received income and seniority protection guarantees in return for contract modifications demanded by USAir. PSA now must reach agreement on contracts covering 3,200 flight attendants, ground personnel and mechanics represented by the Teamsters.