On April 27, the Indian Air Force successfully test fired the Derby beyond-visual-range (BVR) air-to-air missile at a test site off the Goa coast. The Rafael manufactured missile was fired from a Tejas Light Combat Aircraft, to “expand the firing envelope as well as to demonstrate safe operation of the aircraft during missile plume ingestion into the aircraft engine under worst case scenarios,” according to the official MoD statement. The Derby has a range of around 50 km and can reach a top speed of Mach 4. It serves as the Tejas LCA’s primary air-to-air weapon system.