Delhi Metro Airport Express Line (AEL) from New Delhi Metro Station to Dwarka Sector 21 linked the Indira Gandhi International Airport. The line was operated by the Delhi Airport Metro Express Pvt Limited (DAMEPL), a subsidiary of Reliance Infrastructure (RInfra), the concessionaire of the line. The AEL was opened on February 23, 2011. Due to defects with the civil structure on the elevated section of the line, it was temporarily shut down on July 8, 2012. DAMEPL had been unable to run the AEL profitably ever since it started operations due to poor ridership and high operating costs. After three months in October, 2012 with the repairs nearly completed, RInfra had to take a call on the way forward.