An investigation into the unusual GPS spoofing that IGI Airport has been dealing with over the past few weeks has been started by the office of National Security Adviser (NSA) Ajit Doval.
Since spoofing has typically been prevalent in conflict areas, it has been learned that the NSA is collaborating with other aviation and defense departments on this matter.
About 60 nautical miles from the airport, this phenomena causes aircraft approaching land to frequently get false terrain alerts and incorrect location or heading signals.
The Delhi airport has never had this problem before. The airlines have been alerting their pilots of spoofing through the "automatic terminal information service" for IGIA on a regular basis.
Directorate General of Civil Aviation (DGCA) chairman Faiz Ahmed Kidwai approved the installation of a category-1 (CAT-I) instrument landing system (ILS) at IGIA's warhorse runway 10/28's 10 on the Dwarka side on Monday, while security services are investigating the cause of this interference. Airmen will now probably receive a notice from the Airports Authority of India by Tuesday.
Because of the spoofing, DGCA accelerated this process from its initial date of November 27. In spite of GPS spoofing, this will assist an aircraft landing on the main runway (10/28) from the Dwarka side when easterlies are blowing.
Aircraft can land using "required navigation performance" in the absence of ILS, however this requires GPS, and spoofing has occasionally interfered with flight movement on the main runway.
At India's busiest airport, which now handles roughly 1,550 daily flights, the inability to land on runway 10 end caused congestion, forcing some planes to divert to other airports like Jaipur.
Due to "mandatory flight calibration of ILS will take place between 11.30am and 1.30pm as part of continuous safety practices," Delhi International Airport Ltd. has issued a warning that "some flight schedules may be impacted" on Tuesday.
There will be "regulated during this period" flights. Passengers have been instructed by DIAL to "coordinate with airlines to get updated flight information status" as a result.
Every six months, IGIA plans to calibrate all of its runways. The ILS of runway 29 left (29L), which is utilized for arrivals and is closest to the Gurgaon side, is scheduled for calibration on Tuesday, according to sources.
