Ce glossaire est rédigé pour une utilisation dans le cadre d’une compagnie aérienne virtuelle et de la simulation de vol au sein de Virtual Air Canada Airline. Il ne constitue pas une référence en aviation réelle.
L’unité d’affichage de commande (CDU) est l’interface principale du poste de pilotage pour le système de gestion de vol (FMS). Elle consiste en un écran affichant des données alphanumériques et un clavier avec des touches de sélection de ligne utilisées pour entrer, modifier et consulter les données du FMS. Par le CDU, les équipages de conduite programment la route, entrent les données de performance (masses, cost index, altitude de croisière et prévisions de vent), définissent les procédures de départ et d’arrivée et surveillent le plan de vol calculé.Sur les aéronefs dotés d’installations FMS doubles ou triples, chaque position pilote a son propre CDU, et les deux unités sont liées aux mêmes bases de données FMS. La saisie de données au CDU se fait typiquement durant le prévol et la croisière en utilisant les pages INIT, ROUTE, PERF INIT et DEP/ARR. Les erreurs de saisie au CDU - comme un cost index incorrect, une mauvaise altitude de croisière ou un waypoint oublié - peuvent affecter les calculs de consommation, la programmation de vitesse et la précision du profil vertical calculé.
Dans les opérations de la compagnie aérienne virtuelle
Chez Virtual Air Canada Airline, la programmation correcte du CDU est un élément fondamental de la préparation avant le départ. L’OFP de SimBrief fournit toutes les données nécessaires pour alimenter le FMS - route, masses, cost index, dégagement et niveau de croisière. Prendre le temps d’entrer ces données avec précision avant le départ et de contre-vérifier la route FMS par rapport à l’OFP est conforme aux procédures normalisées des AOPS et reflète les pratiques du monde réel pour les opérations de vol professionnelles.
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