On 30 January 2016, an Airbus A320 crew cleared for an ILS approach to runway 11 at Delhi reported established on the runway 11 LLZ but were actually on the runway 09 LLZ in error and continued on that ILS finally crossing in front of a Boeing 737-800 on the ILS for runway 10. The Investigation found that the A320 crew had not noticed they had the wrong ILS frequency set and that conflict with the 737 occurred because Approach transferred the A320 to TWR whilst a conflict alert was active and without confirming it was complying with its clearance.