sentences:  Before the hull loss of Crossair Flight 498, there had been only four crashes worldwide of the 400 Saab-340 plane types since 1984 and only two of those were hull losses.The two hull losses were a 1994 KLM Cityhopper crash that killed three in the Netherlands and a 1998 Formosa Airlines crash that killed 13 in Taiwan.An examination of pilot Pavel Gruzin's body revealed traces of the drug phenazepam, a benzodiazepine-class sedative in his muscle tissue.