DGCA Conducts First Satellite-Based Landing System Trial on Airbus A320 in India

Updated: 15 July 2026· Poetic Pilot Academy

The Directorate General of Civil Aviation (DGCA) has successfully completed India's first satellite-based landing system (SLS) approach on a commercial jet aircraft. The trial was carried out using an IndiGo Airbus A320 at Udaipur Airport with the help of India's indigenous GAGAN navigation system.

This achievement represents an important milestone in India's aviation sector and highlights the country's progress towards modern satellite-based navigation. Until now, similar procedures had mainly been demonstrated on turboprop aircraft.

What Happened?

The demonstration involved an IndiGo Airbus A320 successfully performing a Localiser Performance with Vertical Guidance (LPV) approach using the GPS Aided GEO Augmented Navigation (GAGAN) system developed jointly by the Airports Authority of India (AAI) and the Indian Space Research Organisation (ISRO).

Officials believe this successful demonstration could accelerate the adoption of satellite-based precision approaches at airports across India, particularly where conventional Instrument Landing Systems (ILS) are not available.

Understanding GAGAN

GAGAN (GPS Aided GEO Augmented Navigation) is India's Satellite Based Augmentation System (SBAS). It improves the accuracy, integrity and reliability of satellite navigation by broadcasting correction signals through geostationary satellites.

Instead of depending entirely on expensive ground-based navigation equipment, compatible aircraft can receive highly accurate horizontal and vertical guidance directly from satellite-based navigation systems.

Why This Development Matters

• Improves landing precision.
• Enhances flight safety.
• Reduces dependence on costly ground infrastructure.
• Supports operations at more airports across India.
• Strengthens India's indigenous aviation technology.

What is an LPV Approach?

Localiser Performance with Vertical Guidance (LPV) is a satellite-based precision approach procedure that provides both lateral and vertical guidance during landing. It delivers highly accurate navigation without requiring a conventional Instrument Landing System installed at the airport.

Why Should Aspiring Pilots Know About This?

Modern commercial aviation is increasingly adopting technologies such as GNSS, RNAV, RNP, SBAS and LPV procedures. Understanding these navigation concepts is becoming increasingly important for aspiring commercial pilots preparing for DGCA examinations and future airline careers.

Students preparing for DGCA examinations can build a strong theoretical foundation through our DGCA CPL Ground Classes, where experienced airline pilots explain modern navigation concepts using practical airline examples.

Learn DGCA Concepts with Poetic Pilot Academy

At Poetic Pilot Academy, we believe aspiring pilots should understand not only the DGCA syllabus but also how aviation operates in the real world. As technologies such as GAGAN, GNSS, RNAV and satellite-based navigation continue transforming commercial aviation, our instructors focus on helping students understand the concepts rather than simply memorising examination questions.

Our classroom batches in Delhi and Bangalore, along with live online classes across India, provide personalised study notes, DGCA-style mock examinations, online question banks, continuous doubt-solving support and structured mentorship throughout your preparation.

GAGAN: India's Indigenous Satellite Navigation System

GAGAN (GPS Aided GEO Augmented Navigation) is India's Satellite Based Augmentation System (SBAS), jointly developed by the Indian Space Research Organisation (ISRO) and the Airports Authority of India (AAI). It was designed to improve the accuracy, integrity, availability, and reliability of standard GPS signals for civil aviation, allowing aircraft to navigate and land more safely using satellite technology.

India became only the fourth region in the world, after the United States, Europe and Japan, to develop and implement its own certified Satellite Based Augmentation System. Unlike conventional GPS, GAGAN continuously broadcasts correction data through geostationary satellites, enabling aircraft to determine their position with much higher precision.

The system consists of 15 Indian Reference Stations (INRES), two Master Control Centres, three Uplink Stations, dedicated communication networks, and multiple geostationary satellites carrying GAGAN payloads. Together, these components provide continuous correction signals across the Indian Flight Information Region and beyond.

One of GAGAN's biggest advantages is that it allows aircraft to perform highly accurate satellite-based approaches at airports that may not have expensive Instrument Landing Systems (ILS). This improves operational efficiency while enhancing safety, particularly at regional and secondary airports across the country.

Beyond aviation, GAGAN also benefits maritime navigation, railways, highways, disaster management, defence, telecommunications, surveying, and many other industries that depend on highly accurate positioning information.

Different Types of Aircraft Approaches

Landing an aircraft is one of the most critical phases of flight. Depending on weather conditions, airport infrastructure and aircraft equipment, pilots may use different types of instrument approaches. Traditional approaches rely on systems such as the Instrument Landing System (ILS), while modern aircraft increasingly use satellite-based procedures including RNAV, RNP and LPV approaches supported by systems like GAGAN.

As satellite navigation technology continues to evolve, commercial pilots must understand these systems not only for DGCA examinations but also for real-world airline operations. Modern navigation procedures are becoming an increasingly important part of everyday flying.

Build Your Aviation Knowledge with Poetic Pilot Academy

At Poetic Pilot Academy, we believe future airline pilots should understand how modern aviation actually works—not just memorise answers for DGCA examinations. Our instructors explain real-world aviation technologies including GNSS, GAGAN, RNAV, RNP, LPV approaches, aircraft systems, meteorology and modern airline operations through practical examples that make complex topics easier to understand.

Our DGCA CPL Ground Classes are conducted by experienced airline pilots through classroom batches in Delhi and Bangalore, along with live online classes that students can attend from anywhere in India. Students receive personalised study notes, DGCA-style mock examinations, an online question bank, continuous doubt-solving support and structured mentoring throughout their preparation.

If you're passionate about aviation and dream of becoming a commercial pilot, explore our other guides including How to Become a Pilot in India, Best DGCA Ground Classes in India, CPL Cost in India, and Airline Pilot Salary in India. Our goal is to help aspiring pilots build a strong theoretical foundation before progressing to flying training and a successful airline career.