NEW DELHI (Reuters) -Indian investigators of the deadly Air India airliner crash that killed 260 last month told a meeting of lawmakers that the plane's black boxes were not damaged, two people familiar with the discussions said. The revelation about the devices critical to reconstructing the events leading up to an air crash, comes after Indian media said they were damaged when the London-bound Boeing Dreamliner crashed on June 12, to erupt in a massive fireball. The Aircraft Accident Investigation Bureau has also been able to extract "good data" from the black boxes, its officials told lawmakers on Wednesday during a parliamentary panel meeting on aviation, added one of the sources.