A second man has pleaded guilty in Miami federal court to charges of scheming to illegally export military aircraft parts to Iran. Traian Bujduveanu pleaded guilty Thursday to a single conspiracy count. He acted as his own lawyer and faces up to five years in federal prison when sentenced June 11. Iranian-born Hassan Keshari previously pleaded guilty. Prosecutors said both men were illegally helping Iran obtain parts for such aircraft as the F-14 Tomcat fighter, C-130 cargo plane and AH-1 attack helicopter. The parts were shipped from South Florida to Dubai and on to Iran. Keshari also faces up to five years in prison.