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Frequently Asked Questions

Navigation Databases


What procedures are not in the Navigation Database?

Universal Avionics Flight Management Systems (FMS) prior to Software Control Number (SCN) 802.4 is not approved to fly Localizer Circle to Land procedures, Back Course Circle to Land, Localizer Directional Aid (LDA) and SAAAR approach types. Therefore, they are not included in the Navigation Database. SCN 802 and later are approved for Localizer and Back Course Circle to Land procedures, which are included in the Navigation Databases for those software versions.