IATA, the world association of airlines, called Tuesday for "more to be done" for security after last week's discovery of bombs in parcels transported from Yemen, DPA reported.
At a conference in Frankfurt, Germany on airline security, IATA secretary general Giovanni Bisignani said the situation had improved since suicide attacks on New York and Washington on September 11, 2001.
"But more has to be done," he said, adding the security was a continuous process. Last week's finds showed that the aviation industry and governments had to cooperate closely.
The International Air Transport Association (IATA) is a trade body with 230 airlines as members.