By Dave English The pilot of a Piper PA-32 was having some navigation and control problems. He was in the clouds on a night RNAV GPS instrument approach into the Raleigh Durham International Airport (KRDU), North Carolina. Eventually, he broke out of the clouds, seeing the runway straight ahead. But instead of landing, he crashed one mile short of the airport. The National Transportation Safety Board (NTSB) recently released its full report on this Oct. 20, 2019, accident. It carefully details the issues the instrument flight rules (IFR)-rated private pilot had in the clouds. However, the unsa…