Copter Falls Into PacificCrash Kills Cornwells AirmanA 20-y e a r-old Cornwells Heights sailor is one of three Navy Airmen reported lost and dead at sea following the crash of a jet-powered helicopter 60 miles off San Diego, Calif, on Tuesday.Naval authorities at Ream Field. Imperial Beach. Calif., have listed Airman Ernest C. Sowell Jr., 1302 Bristol Road. Cornwells Heights as the airman.Co-Pilot RescuedThe pilot and another seaman were also listed as dead. The copilot. Identified as Lt. Cornelius Shea of Imperial Beach, was rescued by a destroyer shortlyERNEST C. SOWELL JR.after the SH3 Sea King helicopter crashed.The giant jet-copter, based at Ream Field, crashed about 10:10 p.m. Tuesday shortly after ,taking off from the antisubmar- ,ine carrier USS Bennington.Search Halted cof the Santa Catalina Islands was halted at noon yesterday. 1Sowell, a 1%5 graduate oi vBensaiem High School, entered the Navy in September 1966. He .attended Furman University in ;Greenville. S.C. for one year.He is survived by his parents, fMr. and Mrs. Ernest C. SowelJ ?Sr. and two brothers. Ronald, 16 cand David. 14. p