Tests on four GE aircraft overseas failed during the past two years . NTSB issues an ` ` urgent '' recommendation to continue inspections of the engines on U.S. aircraft . At issue are General Electric V - 400 series jet engines , found on a small number of aircraft . A GE spokeswoman says most of the engines are used on commercial planes .
Engines on four jet aircraft overseas failed during the past two years . NTSB issues an `` urgent '' recommendation to increase inspections of the engines on U.S. aircraft . At issue are General Electric CF6-45/50 series jet engines , found on a small number of jets . A GE spokeswoman says most of the engines are used on cargo planes .