When deploying a GBAS it is important that States consider changes to existing practices for operational personnel both in ANSPs and airspace users. The following provides guidance on key areasto consider with the introduction of a GBAS:

• Any changes to sectorisation or airspace (introduction of a first of type precision to a runway or extension of the GBAS Approach Service Volume may require airspace changes) 
• Any changes to standard ATM, CNS maintenance and flight operational procedures
• Any changes to ATS phraseology and flight plans
• Any changes to separation standards
• Any changes to the information on GBAS operational status provided to pilots
• Any changes to existing documentation
• changes to Human Machine Interfaces