BROKEN BOW, Neb. (AP)-The Civil Air Patrol ended its search in northeastern Nebraska late Thursday for a plane earnin'â six persons, missing since last Saturday evening.CAP spokesman said it was hoped a full scale air and ground search could lie resumed Friday in the Broken Bow area incentral Nebraska, where weather conditions prevented a thorough search earlier for thewhite plane with red trim, lastheard from in a radio check at North Platte at 6:13 p.m. Saturday.Gov. Norbert Tiemann ordered the Nebraska National Guard tlt; join the search and gave approval to use Guard personneland helicopters.Official entry of the Guard will bring additional helicopters and personnel into the search.The plane carried two fae-uâtv members and four students ft om Augustana College atSioux Falls, S.D., returning from a forensics meet at Colorado Springs, Colo.Missing are Fravne Anderson, 43, head librarian and pilot of the plane; forensics director K. Don Tibbetts, 34, and four de-hate students, Joyce Kstwick, Milan, Minn.; Linda Ileidemann, Rapid City, S.D., A1 Jensen,Pipestone, Minn,, and James Housek of Shawnee Mission, Kan.