14 cfr 61.31 July 8, 2019 16 32 64 128 14 cfr 61.31 f 14 cfr 61.31 k 14 cfr 61.315 14 cfr 61.313 14 cfr 61.311 14 cfr 61.53 14 cfr part 61.35 14 cfr 61.65
