Honeywell NZ-2000 Primus Epic Flight Management System SAIB NM-10-12

This Special Airworthiness Information Bulletin (SAIB) advises registered owners and operators of the transmission of incorrect information from the Honeywell NZ-2000 Primus Epic Flight
Management System (FMS) software having part number (P/N) VAR9XX, VAR10XX, or VAR11XX and installed on Hawker Beechcraft Corporation (Type Certificate Previously Held by Raytheon Aircraft Company) Model 4000 airplanes, Gulfstream Aerospace Corporation Model G-IV, GIV-X, and GV-SP airplanes, Agusta AW-139 helicopters, and Cessna Aircraft Company Model 680 airplanes.

Background
During an RNAV approach an airplane programmed with NZ-2000 FMS software (version 5.2), flew the WATTS THREE ARRIVAL (RNAV) Standard Terminal Arrival Route (STAR). A different
runway was selected in the FMS during the STAR, and resulted in the FMS navigating the airplane toward the initial STAR waypoint instead of the next sequential STAR waypoint. As a result of this
incident, Honeywell International Inc. issued Service Information Letter, D200909000044, dated October 15, 2009, to provide operators with guidelines for flight plan modifications made on the
ARRIVAL page, including a destination runway change. This SAIB addresses the Primus Epic FMS because its software was a derivative of the NZ-2000 FMS software. At this time, the airworthiness concern is not an unsafe condition that would warrant airworthiness directive (AD) action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.

SAIB Attached