Interestingly, there was a bigger surprise waiting when I read the report. Apparently, the Thai Airways aircraft was cleared for takeoff from Runway 29 at Delhi by the air traffic control. Even before the preceding aircraft AI014 had vacated the runway. Why did the investigators fail to notice this error?
A cognitive view of 100 Tonne takeoff weight error, close shave for AirFrance
A 100 Tonne error in take off performance. We continue to believe that an engineering control will prevent a future incident. We need to ensure that flight crew perform NORMAL actions/procedures consistently and with accuracy. Human factors should be the point in focus.