Mrs. Martha Kelloch, 83, is shown above with her daughter, Mrs. Walter Christie of Presque Isle on her arrival at the Caribou airport in a Boston-Maine Airways plane.  The trip from Boston was Mrs. Kelloch's first airplane flight and she said she enjoyed it very much.  Mrs. Kelloch had spent the past few months at the home of a son in Brookline, Mass., and was accompanied to Aroostook by her grandson, Hudson of Brookline.  Her son and his wife, Mr. and Mrs. William Kelloch of Presque Isle, with Mrs. Christie, met her at the airport.  Another daughter, Mrs. William Paul, also lives in Presque Isle.