The Directorate General of Civil Aviation (DGCA) plans to ramp up its technical staff to 1,100 by hiring another 400 people in the next one to two years as well as increase the number of offices to 19 as the watchdog strengthens the safety oversight capabilities, according to its chief Arun Kumar. Kumar, who will be superannuating on February 28 after being at the helm for nearly four years, described his tenure as a "roller coaster ride" during which various steps were taken to improve aviation safety and the regulator also dealt with multiple headwinds, including engine issues and safety concerns over SpiceJet.