The helicopter crash that claimed the lives of the former Andhra Pradesh Chief Minister, Dr YS Rajasekhar Reddy, and four others on September 2, 2009, was caused by the error of the pilots, who lost control over the chopper, according to the report of a committee of inquiry.
The report stated that the crew noticed a snag and was engrossed for vital six minutes, before the impact, in searching for the relevant checklist from the flight manual. This distracted their attention from the prevailing poor visibility, thus leading to the loss of situational awareness. The crew flew in instrument flying condition, though the flight plan was cleared for Visual Flight Rules (VFR).
The probable cause is reported as an accident occurred owing to the loss of control, resulting in an uncontrolled descent in the terrain at a very high rate due to entry into severe down draught.