Pinnacle Probe Finding the cause of an accident often leads to a cure--and the ongoing probe of Pinnacle Airlines Flight 3701 is highlighting the need for enhanced high-altitude training and safety management programs at regional airlines. Those shortcomings came to the fore during the NTSB's June 13-15 hearing that aimed to gather more information about the events leading to the Oct. 14, 2004, crash of a Bombardier CL600-2B19 (a.k.a. CRJ200) regional jet that resulted in the deaths of the two pilots on board. The board's findings show that on that date Pinnacle Airlines Flight 3701, operating as Northwest Airlink, departed...