It cannot open or close air routes and does not warn airlines to avoid regions because of conflict.
Some in the aviation industry now want ICAO to do more after Malaysian Airlines flight MH-17 was downed by a missile over eastern Ukraine last week, killing 298 people.
“I’m trying not to get too involved in how I feel about what they’ve done because I don’t want it to eat me up inside,” she said.
“I just want to grieve and carry on the way my brother would want our family to carry on as he was such a big personality.” She said her family had stayed positive after the recent loss of her father, and that Mr Thomas would have wanted them to do the same after his death.
She told the BBC she had not been thinking about who was responsible for bringing down flight MH17 over Ukraine, amid the widespread belief it was shot down by a missile.
That information includes personal identifying marks, from tattoos to scars.
Detectives have sought out dental records, fingerprints and DNA material where it is available, and assembled it all into a so-called ante-mortem file that is available to compare with the remains stored in Hilversum. "We don't know the state of the victims; we have to look at what they bring us tomorrow, and then we will see." 19.47 The United States will release intelligence backing its assertion the Malaysian airliner that crashed in Ukraine was brought down by a missile fired from the separatist-controlled area, the State Department told Reuters.
But the sources said there was no guarantee the Montreal-based International Civil Aviation Organization (ICAO) would decide to take on more responsibility.
ICAO, composed of 191 signatory states, as well as global industry and aviation organizations, has a limited role.