ERSA meaning in Regional ?

Answer: What is En Route Supplement Australia mean?

Airservices Australia is an Australian Government owned corporation, responsible for providing safe, secure, efficient and environmentally responsible services to the aviation industry within the Australian Flight Information Region (FIR). Some of Airservices responsibilities include air traffic control, airways navigation and communication facilities, publishing aeronautical data and airport rescue and fire-fighting services. Airservices Australia has international partnerships with ICAO, CANSO and IATA.

reference

Full Form	Category
Engineering of Reconfigurable Systems and Algorithms	Academic & Science
Economic Research Southern Africa	Academic & Science
Education Recovery Support Activity	Community
Existing Resources and Site Analysis	General
Estimation of Recent Shared Ancestry	General
Employer Retirement Savings Account	General
Eastern Region	General
Endurance Race Smooth Airy	General
Emergency Roadside Assistance AcronymFinder	General
Ed Renee Sydnie and Avery	General
Emergency Road Side Assistance	General
Equity Release Solicitors Alliance	Governmental
Employment Related Services Association	Governmental
European Regional Science Association	Regional
European Rail Software Applications	Regional
European Roma Spirit Award	Regional
Enhanced Regional Situational Awareness	Regional
En Route Supplement Australia	Regional
European Racquet Stringers Association	Regional
Eagle River Sports Arena	Sports
Eastern Region Snowsports Association	Sports