New Delhi, Feb. 25 -- The Directorate General of Civil Aviation (DGCA) on Tuesday ordered the grounding of four aircraft operated by VSR Ventures Pvt Ltd following a special safety audit that was initiated after the fatal Learjet 45 crash in Baramati on January 28, officials said. "The audit was ordered on February 2. It commenced on February 4 and was completed by February 16, after which the findings were analysed before a final decision was taken," an official aware of the development said. The audit followed the crash of the company's Learjet 45 (VT-SSK), which killed five people, including former Maharashtra deputy chief minister Ajit Pawar....