Air Traffic Control averts mid-air collision of three foreign airlines near Delhi; AAIB launches probe

In a rare incident, three planes of three foreign airlines, carrying hundreds of passengers, came perilously close in the Delhi flight information region and collisions were averted after multiple auto-generated warnings and intervention from ATC, an official said on Friday.

Press Trust of India December 28, 2018 20:03:27 IST
Air Traffic Control averts mid-air collision of three foreign airlines near Delhi; AAIB launches probe

Mumbai: In a rare incident, three planes of three foreign airlines, carrying hundreds of passengers, came perilously close in the Delhi flight information region and collisions were averted after multiple auto-generated warnings and intervention from Air-Traffic Controller (ATC), an official said on Friday. The Aircraft Accident Investigation Bureau (AAIB) has started a probe into the incident, which happened on 23 December.

Air Traffic Control averts midair collision of three foreign airlines near Delhi AAIB launches probe

Image used for representational purpose only. Reuters

Flights of Dutch carrier KLM, Taiwan's Eva Air and the US-based National Airlines were involved in the incident, the official said. The incident happened in the Delhi Flight Information Region (FIR). An FIR refers to specified airspace where flight information and alerting services are provided. Generally, an FIR can be land and sea territory as well as any international airspace as defined under global norms. According to the official, at the time of the incident, National Airlines' flight NCR 840 was on its way to Hong Kong from Bagram in Afghanistan while the KLM Flight KLM 875 was heading to Bangkok from Amsterdam. The Eva Air flight EVA 061 was flying to Vienna from Bangkok, the official said.

"First it was NCR 840, which was flying at flight level 310 (31,000 ft) and EVA 061 at flight level 320 (32,000 ft) which breached mandatory separation. The pilots of both the aircraft were alerted by the onboard TCAS warning system," the official said. Around the same time, the KLM flight was at 33,000 ft, he added.

Following the TCAS (Traffic Collision Avoidance System) warning, the pilot of NCR 840 sought to climb to 35,000 feet but was told to remain at that current level till the time it gets a go-ahead. "However, when the air traffic controller (ATC) observed it climbing, it was immediately asked to take a left turn. In the meantime, EVA also continued climbing at flight level 330, a level at which KLM was already flying, and at this time, another TCAS warning went off, alerting the pilots to steer the aircraft to a safer distance," the official said. As the NCR 840 again descended to flight level 330, it came across the EVA flight, triggering another TCAS alarm, the official said.

Updated Date:

Find latest and upcoming tech gadgets online on Tech2 Gadgets. Get technology news, gadgets reviews & ratings. Popular gadgets including laptop, tablet and mobile specifications, features, prices, comparison.

also read

Delhi-NCR see introduction of GRAP; plan includes ban on fuel-powered generators, firecrackers to check deteriorating air quality
India

Delhi-NCR see introduction of GRAP; plan includes ban on fuel-powered generators, firecrackers to check deteriorating air quality

The plan will also include mechanised sweeping and frequent sprinkling of water on roads and night patrolling to check dust, industrial emissions and burning of waste

Air pollution in Delhi worsens to ‘very poor’ category, first time this season; National Capital registers AQI of 304
India

Air pollution in Delhi worsens to ‘very poor’ category, first time this season; National Capital registers AQI of 304

As per a government-run monitoring agency, SAFAR, an increase in stubble burning in Punjab, Haryana, and neighbouring regions of Pakistan have affected the air quality

Delhi HC stays state govt's decision asking 12 DU colleges to pay pending salaries from Students Society Fund
India

Delhi HC stays state govt's decision asking 12 DU colleges to pay pending salaries from Students Society Fund

Justice Navin Chawla passed the order on a plea by Delhi University Students Union which said the students fund cannot be used for anything other than students' welfare