Cross-border converter
EMTAK 2025 52231 → CAE Rev 4 equivalent (Portugal)
Estonia's national activity classification (EMTAK 2025) shares its 4-digit backbone with the EU NACE Rev 2.1 standard. We use that backbone to surface the equivalent CAE Rev 4 subclass(es) used in Portugal.
Shared EU parent
52.23
Service activities incidental to air transportation
52231
Lennuväljade ja lennujaama reisiterminalide töö
52230
Atividades auxiliares dos transportes aéreos
Compreende as atividades indispensáveis à realização dos transportes aéreos: exploração de aeroportos e de terminais aéreos; serviços de controlo de tráfego aéreo e de terra nos aeroportos, garantia da segurança nos aeródromos, trabalhos de manutenção das infraestruturas, armazenamento de aeronaves e atividades similares ligadas a transporte aéreo de passageiros, carga e correio, realizadas por empresas independentes do transporte.
About this conversion
EMTAK 2025 is the activity classification used in Estonia. CAE Rev 4 is the equivalent system in Portugal. Both are national implementations of EU NACE Rev 2.1, so any 5th-digit subclass in one system can be traced back to a shared 4-digit EU class — and from there, forward into the other country's subclasses.
This page is generated for the query "EMTAK 2025 52231 to CAE Rev 4" and stays in sync with our monthly Market Intelligence sync.