The Mid-Air Collision Of Two IndiGo Aircraft , Averted

The Mid-Air Collision Of Two IndiGo Aircraft , Averted

 The Mid-Air Collision Of Two IndiGo Aircraft , Averted(Representational image)

​​​​​​New Delhi: On Tuesday, two IndiGo flights may have been moments away from a mid-air collision. To avoid a disaster, the pilots on both aircraft took emergency evasive manoeuvres. About 330 passengers had a narrow escape.

The routes that the aircraft was operating on was, Coimbatore-Hyderabad and Bangalore-Cochin, when cockpit alerts warned the pilots of an imminent collision between the airliners.

The sources told Press Trust of India that the vertical separation between the two aircraft was only about 200 feet and a collision was averted after the Traffic Collision Avoidance System (TCAS) alarms went off.

Indigo stated, "The TCAS-Resolution Advisory system was triggered on two of our aircraft." 

The Directorate General of Civil Aviation, the aviation watchdog, of the near-miss was also informed by the airlines.

The airlines has not responded to NDTV's queries on the circumstances which resulted in the TCAS alerts being generated. They have also declined to share detail on how close the aircraft were to each other.

An investigation has been begun by the Aircraft Accident Investigation Board (AAIB).

Also Read: Thirteen Amarnath Pilgrims Injured In Accident

The Traffic Collision Avoidance System, is used onboard airliners as the last defence against mid-air collisions. A Resolution Advisory is generated by the system, as was the case on this occasion, a loud automated voice gives the pilots urgent instructions on what to do immediately.  These voice commands can be "Climb, climb," "descend, descend," "increase climb," "increase descent," "level off" among others.  

In India, all civilian airliners operators are required to operate TCAS systems which scan the airspace around the aircraft through a transponder which detects signals from other aircraft which use compatible systems. 

The sound of a TCAS alert is based on the rate which the aircraft in conflict are approaching one another, in addition to other variables calculated by the system. The system works in a coordinated manner, so instructions given to two aircraft which are headed towards each other are usually diametrically opposite. For instance, if pilots in one aircraft are ordered to climb, pilots in the other aircraft would be told to descend. 

A similar incidents took place in January, last year after two aircraft came face-to-face after landing at different runways of the Indira Gandhi International (IGI) airport.

At IGI airport, a major accident was averted after two planes, an IndiGo and a SpiceJet aircraft, faced each other on the runway, on December 2016.

For More India News Click Here

Support Our Credible Journalism By subscribing to dailyaddaa. For the latest news on dailyaddaa, like us on Facebook and follow us on Twitter.