The aircraft manufacturers Boeing and Airbus are predicting bumper orders over the next twenty years from India, the world's ninth biggest economy. They believe that India's position as a fast growing market has the potential to offset weaker sales elsewhere. Some analysts believe that by 2040 over 50,000 new planes could be in the skies thanks to strong demand from emerging markets. So is aviation a sector worth sticking with? What are the ethical issues investors need to think about? Or should they be looking at alternative sectors? Ketan Patel is Associate Fund Manager of the Amity UK fund at EdenTree Investment Management and joined Juliette Foster in the studio.