ICAO has developed international licensing Standards for the following aviation activities:
Flight crew licences:
1. Licences and Ratings for Pilots (Annex 1, Chapter 2):
- Private pilot (aeroplane, helicopter, powered-lift and airship);
- Commercial pilot (aeroplane, helicopter, powered-lift and airship);
- Multi-crew pilot (aeroplane);
- Airline transport pilot (aeroplane, helicopter and powered-lift);
- Glider pilot; and
- Free balloon pilot.
International recognition of flight crew licences
The Convention on International Civil Aviation, often called the Chicago Convention, provides for worldwide recognition of flight crew licences issued by any member State of the International Civil Aviation Organization (ICAO) provided that:
- the licence meets or exceeds the ICAO licensing Standards of Annex 1 – Personnel Licensing to the Convention on International Civil Aviation; and
- the licence is used on an aircraft which is registered in the State which has issued or validated the licence.
Some member states exceed the minimum ICAO standards for differing reasons.
https://www.icao.int/safety/airnavig....aspx#anchor02
Annex 1 here.
https://www.theairlinepilots.com/for...cao/annex1.pdf