sentences:  For example, in its report on the December 1, 1993, fatal crash of Northwest Airlink Flight 5719, the NTSB determined the "failure of the company management to adequately address the previously identified deficiencies in airmanship" was a contributing factor.More recently, in the February 2, 2005 business jet accident at Teterboro Airport, NTSB investigator Steve Demko, speaking about the probable cause, said determining an aircraft's weight and balance before takeoff is "basic airmanship," a "Flying 101 type of thing.