The Central Bureau of Investigation on Friday ruled out any "conspiracy or sabotage" in the fatal helicopter crash, which killed the then Andhra Pradesh Chief Minister Y S R Reddy.
The helicopter crash, which claimed the life of Andhra Pradesh Chief Minister Y S R Reddy, was caused by pilots' error who lost the chopper's control and were engrossed for vital six minutes trying to locate a flight manual, the probe report said on Wednesday.
An SMS received by the mobile phone of Andhra Pradesh Chief Minister Y S R Reddy's security officer John Wesley after the VVIP helicopter crashed is what provided the most crucial clue to trace the accident site, government officials said in New Delhi on Thursday.
After its spiral dive last year, the Indian aviation industry noticed slight signs of improvement at the fag end of 2009 that also saw a major helicopter crash in which Andhra Pradesh Chief Minister Y S R Reddy perished and several near-miss incidents.