Portuguese Airports Brace for Strike as Union and Menzies Aviation Face Criticism On Thursday, 29 August 2024, the Portuguese Union STTAMP – Sindicato dos Trabalhadores dos Transportes de Portugal – issued a strike notice for major airport handling company SPdH – Serviços Portugueses de Handling, SA. Managed by the largest shareholder Menzies Aviation, the strike is scheduled to take place on 31…