By Helena de Moura, CNN
(CNN) -- On the one-year anniversary marking the crash of Air France Flight 447, which killed 228 people when it fell into the Atlantic Ocean, victims' families will push for more thorough searches and more evidence, a family activist said Monday.
The Airbus A330-200 crashed into the ocean as it headed from Brazil to France, in one of Air France's worst tragedies.
A series of ceremonies will take place in Paris on Tuesday; a Mass was held Monday in Rio de Janeiro.
Brazilian businessman Martin Van Sluys, who has traveled the same Rio de Janeiro-Paris route numerous times to meet with French officials, said he will not give up his fight for a comprehensive report that can explain the causes behind the crash that cost the life of his sister.
"I keep thinking to myself as I travel in these planes, this could be me one day, this could be my son. There are so many planes flying around that could have the same issues," said Van Sluys, who acts as spokesman for families of the crash victims.
