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 grounding of the four aircraft, all Learjets, raises questions about the company's maintenance practices, their regulatory review, and if the plane that crashed suffered from deficiencies similar to the ones that have now been detected. "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 ...