01 Dec 2023 Genesys Aerosystems Navigation Database Alert Notices & Alerts / Genesys Aerosystems Navigation Database Alert Included Regions (12) Africa, Atlantic, Australia, Canada & Alaska, China, Eastern Europe, Latin America, Middle East & South Asia, Pacific Basin, South America, United States, Western Europe & Mediterranean Included Areas (12) Africa (All), Atlantic (All), Australia (All), Canada & Alaska (All), China (All), Eastern Europe (All), Latin America (All), Middle East & South Asia (All), Pacific Basin (All), South America (All), United States (All), Western Europe & Mediterranean (All) NAVIGATION DATABASE ALERT Effectivity: Product LRU P/N Software Application IDU-III 401-045500-XXXX 5.0C or later IDU-450 42-024001-XXXX 7.0A or later IDU-680P 42-006001-XXXX 8.0A or later Subject: Invalid VNAV Altitude during RNAV Approach in Cycle 2310 In Cycle 2310, Genesys Aerosystems has discovered an issue with certain RNAV procedures whose Glide Path Intercept Point (GPIP) altitude is calculated to be exactly at sea level after application of the Earth Geoidal Model. As a result, the FMS considers the GPIP altitude to be invalid. This can lead to the following issues: 1. GPI Altitude may not be displayed in the ACTV menu. 2. Vertical guidance after FAF may not be consistent with what’s found on the approach plate. 3. VNAV may be downgraded to barometric (VNV-B). DO NOT USE THESE RNAV PROCEDURES IN CYCLE 2310 OR ANY LATER CYCLES UNTIL THE ISSUES ARE FULLY RESOLVED. ALWAYS ADHERE TO THE PUBLISHED NAVIGATIONAL INSTRUMENT PROCEDURES AND NAVIGATIONAL CHARTS IN ALL FLIGHT CONDITIONS. Affected RNAV approach procedures are listed below: Airport ICAO ID ICAO Region Code Airport Name RNAV Procedure EDWE ED EMDEN R07-Y EDWE ED EMDEN R07-Z EDWE ED EMDEN R25-Y EDWE ED EMDEN R25-Z KMSY K4 ARMSTRONG NEW ORLEANS INTL R20-Y Genesys Aerosystems is taking action to correct these issues in future Navigation Database cycles. If you have any questions concerning this database alert, please contact Genesys Aerosystems at genesysssupport@genesys-aerosystems.comor (817) 215-7600 Genesys Aerosystems 2310 Back to All Notices & Alerts