The National Green Tribunal ( NGT) on Friday rapped Delhi International Airport limited (DIAl), Ministry of Civil Aviation and Directorate General of Civil Aviation (DGCA) on the status of implementing the noise barrier, restriction on the use of reverse thrust, greening of airport sideline and dumping of waste by aircrafts before landing.
Clarifying over the issue, DIAl has mentioned that they have given the contract to the IIT-Delhi to study under the Scope of work on the implantation of noise barrier with the possibilities of shifting ground radars. However, DIAl, had omitted the point of “possibility of shifting of ground radars.
“The Scope of work is incomplete as it does not include the possibility of shifting of Ground Radars at all,” said Ashwani Kumar, an advocate who represent an NGO Chetna, the petitioned in this matter. The counsel for the NGO also pointed out that Ahish K Dapre of IIT was commissioned for this purpose and he had already submitted his report but that was not being placed before the NGT by DIAl.
Meanwhile, Justice Swatanter Kumar, the Chairman of NGT was very specific about the imposition of night Curfew as per the letter submitted by Airport Authority of India (AAI) before Delhi High Court and asked DIAl when this order was vacated. The Bench also said that we would decide on night curfew on merit and directed DIAl to submit the copy of report prepared by the IIT Professor.
The Pioneer reported the issues on this issue on January 18.
Why noise barriers are mustIJ
According to aviation experts, reverse thrust causes noise pollution.
An aviation expert said the purpose of using reverse thrust is in cases where runway is wet so that the aircraft comes to a halt. “The airlines encourage use of reverse thrust because the cost of replacement of brake pads and tyres is high in comparison to discomfort caused to the citizens. Normally the cooling time for brake pads and tyres if used instead of reverse thrust is about 90 minutes.”