Common coding rules

This pages contain encoding rules that are common to different scenarios. This includes rules for encoding geometrical/geographical information, rules for encoding schedules, etc.

• Changes only
• Event association with airports and/or FIR
• Digital NOTAM "variants"
• Usage limitation and closure scenarios
• Geometrical and geographical data
• Vertical limits
• Schedules
• Character set
• Text elements (annotations and instructions)
• Data quality warnings