The crash that killed Cory Lidle, the Yankees pitcher, and his flight instructor in Manhattan on Oct. 11 was caused by “inadequate planning, judgment, and airmanship” by the two men, the National Transportation Safety Board concluded today. Mr. Lidle and his instructor, Tyler Stanger, could have safely completed their U-turn over the East River and avoided hitting an apartment building if they had either kept their turn very sharp from beginning to end, or given up on making it within legal limits, leveled the wings, maintained altitude, and flown over the buildings on the Manhattan side, board officials said. They...