New Delhi, Sep 3 - The following is the timeline of the search operations to locate the helicopter carrying Andhra Pradesh Chief Minister Y.S. Rajasekhara Reddy:

Wednesday, Sep 2:

8.30 a.m. - Bell 430 helicopter carrying YSR and four others takes off from Hyderabad's Begumpet airport.

9.35 a.m. - Radio contact lost with helicopter.

1 p.m. - Indian Air force receives request for search and rescue operations.

1.15-1.20 p.m. - Two Chetak helicopters take off from Hakimpet training base in Secunderabad.

3 p.m. - A Mi-8 helicopter takes off from Bangalore's Yelahanka air base. It starts scanning the area indicated by state government agencies.

4.30 p.m. - A Dornier aircraft takes off from Yelahanka. It flies from Yelahanka to Kadapa, Srisailam, and Chittoor before returning to base. It was equipped with a synthetic aperture radar that can look through heavy cloud cover.

5 p.m. - An Avro aircraft and two Chetak helicopters take off from Hyderabad.