Aircraft at no Collision Risk: AAI

The Airports Authority of India (AAI) has said that contrary to media reports there was no serious collision risk between the Air India IAC-941 from Hyderabad to Delhi and the Kingfisher flight KFR-3345 from Delhi to Bhubneshwar on 5 April, 2010 (not 6 April, 2010 as has been reported).
The flight Kingfisher 3345 which departed from Delhi for Bhubaneswar was climbing to Flight Level 250 and the Indian Airlines 941 from Hyderabad to Delhi was descending to flight level 160 and the both the aircraft were under radar control. At the time of incident both the aircraft were approximately at about 35 miles south of Delhi. A predicted conflict alert was generated in the Controller’s display when the Kingfisher flight was climbing through FL 175 [17500 feet] and the Indian Airlines Flight IAC 941 descending through FL 186 [18600 feet]. Both the aircraft at this stage were separated by 1100 feet and 7 nautical miles [NMs] away from each other laterally as against the standard requirement of 1000 meet in vertical dimension and 3 NMs in laterally. Immediately the controllers had initiated corrective action to avoid a potential conflict by giving suitable radar vectors. However, while executing the avoiding maneuvers by the aircraft, the vertical separation between the two aircraft has reduced to 700 feet as against the requirement of 1000 feet.
As both the aircraft involved in the incident were on different flight paths, one inbound approaching for landing and the other departed from IGI Airport, Delhi and corrective action was also initiated by the Air Traffic Controllers, even though there was a breach of separation while executing the avoiding maneuvers by the aircraft, however, there was no risk of collision.
As per standard practice, the air traffic controllers involved have been de-rostered while necessary investigations are being carried out.
15/04/10 PRESS RELEASE/Press Information Bureau

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Categories: Air India Domestic Apr 2010, Airports Apr 2010, Kingfisher Apr 2010, NACIL Apr 2010, Safety Apr 2010