Transcription of Flight Management Computer (FMC) Navigation Database …
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Flight Management Computer (FMC) Navigation Database …
1 Jeppesen, Lido, EAGFLIGHT Management Computer (FMC) Navigation Database CAPACITYA lbert A. HerndonThe MITRE Corporation s Center for Advanced Aviation System DevelopmentMcLean, Virginia 22102 Abstract Navigation Database (NDB) capacity (memory size) has always been an issue in aircraft Flight Management Computers (FMC). And, that issue is a concern for Performance-based Navigation (PBN) Implementation as so many new next generation (NextGen) procedures are being developed and many FMCs no longer have the capacity for additions to their NDBs. For the near-term, the problem will just keep getting worse for aircraft with FMCs limited by capacity due to the growth in the number of coded procedures and waypoints to store and limitations in the storage size. Anecdotal evidence finds Navigation Database suppliers estimating that worldwide procedure production will increase Database size approximately 3% to 8% annually for the forseable In many cases, the airlines must already strictly tailor the available sets of procedures in their databases according to geographic areas to meet current FMC memory capacity constraints.
covers. Like paper charts, the amount of data that needs to be carried with the aircraft is directly related to the size of the coverage area. Depending on the data storage that is available, this means that the larger the required coverage area, the less detailed the database may be. Size and capacity management of data will be discussed later.
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