Udaipur: India has achieved a major aviation milestone with its first satellite-based landing system (SLS) approach on a jet aircraft. The successful trial was conducted by the Directorate General of Civil Aviation (DGCA) using an IndiGo Airbus A320 at Udaipur Airport with the help of GAGAN, India’s indigenous satellite navigation system.
The achievement marks an important step in modernising India’s aviation navigation system. It is expected to improve flight safety, landing accuracy, and airport operations, especially at airports that do not have expensive ground-based landing equipment.
Details of Satellite-Based Landing System
The DGCA successfully carried out India’s first Satellite-Based Landing System (SLS) approach on a commercial jet aircraft. The trial was performed on an IndiGo Airbus A320 at Udaipur Airport using GAGAN (GPS Aided GEO Augmented Navigation), a satellite navigation system jointly developed by the Indian Space Research Organisation (ISRO) and the Airports Authority of India (AAI).
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What is GAGAN
GAGAN is India’s Satellite-Based Augmentation System (SBAS). It improves the accuracy and reliability of GPS signals by providing correction data, allowing aircraft to navigate and land with greater precision. The system was developed by ISRO and AAI to enhance aviation safety across Indian airspace.
What Makes Satellite-Based Landing System Special
The aircraft completed a Localiser Performance with Vertical Guidance (LPV) approach. LPV provides pilots with both horizontal and vertical guidance during landing without depending entirely on a traditional Instrument Landing System (ILS) installed at airports. Until now, such satellite-based procedures in India had mainly been demonstrated on turboprop aircraft. This is the first successful demonstration on a jet aircraft.
What is the Importance of Satellite-Based Landing System
The successful trial offers several benefits for Indian aviation:
- Better landing accuracy.
- Improved flight safety.
- Reduced dependence on costly ground-based navigation systems.
- Easier implementation at regional and smaller airports.
- Greater operational efficiency during poor weather conditions.
A Step Towards Smarter Aviation
Experts believe this achievement will encourage wider adoption of satellite-based landing procedures across India. As more airports and aircraft become GAGAN-compatible, airlines could experience fewer weather-related disruptions and improved operational reliability while strengthening India’s indigenous aviation technology.
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