Concerned over reports that civilian aircrafts may sometimes be flying blind over parts of the Middle East, the civil aviation regulator DGCA has issued an advisory to all Indian airlines. There have been several reports in recent days that navigation systems of civilian aircrafts are being spoofed when they fly over parts of the Middle East. This is fast emerging as a major safety hazard and the DGCA advisory aims to alert airlines of the nature of the threat and how to respond to it.