ASBU - Aviation System Block Upgrade
The ASBU concept focuses on four performance improvement areas:
- airport operations;
 - global interoperable systems and data;
 - optimum capacity and flexible flights;
 - efficient flight paths.
 
ASBUs outline the air and ground equipment and timelines for standards and procedures implementation.
See Also
- ASBU page at EUROCONTROL website.
 - ASBU page at ICAO website.