New US Airport Screening: What Will Be Different When You Land

"What we have seen is very strange," he told reporters in Taipei. "Unilateral measures announced without any prior consultation. That is something that is very concerning and disturbing."

At their annual meeting in Taipei, Association of Asia Pacific Airlines (AAPA) members passed a resolution calling for security measures to be risk-based, outcome-focused and proportionate to the probable threat.

"Unilateral actions taken by individual governments reacting to emerging threats may result in unnecessary disruption or lead to unintended safety consequences," said the members.

AAPA includes most large Asian airlines but not mainland Chinese carriers.

"The risk is other countries make similar demands," AAPA Director General Andrew Herdman said.

New US Airport Screening: What Will Be Different When You Land

US authorities in June also ordered increased security around aircraft and in passenger areas, and other places where travelers can be cleared by US officials before they depart and ordered enhanced screening of personal electronic devices. Some of those new requirements take effect this week as well.

The TSA said in July it was imposing new security rules requiring US domestic airline travelers to remove all electronic items larger than mobile phones such as tablets, e-readers and video game consoles from carry-on baggage for screening.