Pictures of the bust were shared widely on social media, with some critics suggesting it bore more of a resemblance to former Arsenal and Manchester City forward Niall Quinn or The Head from BBC television programme "Art Attack" than Ronaldo.
According to Bleacher Report, which actually commissioned Santos to redo the bust after he was ruthlessly ridiculed for his first attempt, Santos was not informed about the swap.
If you'll recall back in March 2017, the global airport located in Ronaldo's native Madeira Islands officially changed its name to Aeroporto Cristiano Ronaldo.
The airport has replaced his original effort with a bust that boasts a greater likeness to Ronaldo.
Meanwhile, Madeira Island News also quoted Madrid's Airport director Duarte Ferreira who said that the original sculpture has been saved, but no decision has been taken on what to do with it. She said the switch took place on Friday, the same day that Ronaldo scored a hat-trick for Portugal in a 3-3 draw against Spain at the World Cup.
"We consider [its removal] a total lack of respect for the Madeiran people of humble traditions", the petition reads.
"This bust is much better than the other one, that's what everyone thinks", Hugo Aveiro, brother of the five-time Ballon d'or, winner, told the Diario de Noticias da Madeira newspaper.