Address by Dr J S Mathur, Chief Scientist and Head, Knowledge & Technology Management Division and Computational & Theoretical Fluid Dynamics Division, CSIR, National Aerospace Laboratories on the challenges in acquiring aerospace manufacturing capabilities and way ahead, at Session 4: "Roadmap for Aerospace Manufacturing Technologies" at the CII-IAF Seminar on Make in India for Indian Air Force held on 23 May 2017 at New Delhi.