One To Two Hour Delays SeenJ .As A i r ‘Sick Out’ Continues;e;oa1-r-t-eat«yieA Federal Aviation Agency j spokesman today indicated that flights entering Bay Area airports could e x p e c t one-■to-two-hour delays during peak periods as the Air Traffic Controllers . “sick out” .moved into its thirteenth day.Frank Happy, chief of the Air Traffic Branch of the FAA area office, said that delays on incoming flights to San Francisco International Airport from 7-9 p.m. yesterday ran as high as two hours from Los Angeles and one hour from the East Coast — putting them among the longest reported in the nation.More of the same was anticipated at peak hours from -10:30 ami,: and 4r7 p.m. today as a national FAA source listed the regional control center in Oakland as one of the five in the nation still reporting “unusually high” rates of absenteeism. The others: New York, Minneapolis, Chicago. Denver and Kansas City.Terry D, Falkner, PATCOspokesman for the absent aircontrollers, listed 106 of 154 menas 'being out at the OaklandCenter today, 49 of 59 out atOakland’s Terminal Radar Approach Control and 17 of 28 out at San Francisco International.Faikner said that “This is a big day” .in the two-week-old dispute as the FAA stepped up its efforts to get air controllers back to wbrk. One FAA air controller said that 5O0 controllers bad returned to work today since a peak absence o£ 1,882 nationwide last Monday. Falkner said, though, that he anticipated developments from Washington which might bring the two sides to the mediation table soon.“The airlines are hurting,” he said, “and we don't want them to get hurt. And we don’t want to get hurt either,”National officials of the controllers’ union, who accused the FAA of lying about the number of men who have returned to work, awaited word, from the White House on their request for mediation to end the dispute over the controller -workload and equipment. PATCO Sunday particularly objected to an-announcement by Transportation Secretary John A. Volpe that controllers in Cleveland were returning to work in large numbers.