The National Green Tribunal today directed the aviation regulator, DGCA, to substantiate its claim that it is impossible to dump human waste from aircraft tanks mid-air.<br/><br/>A bench headed by NGT Chairperson Justice Swatanter Kumar asked the Directorate General of Civil Aviation (DGCA) and the Central Pollution Control Board (CPCB) to file an affidavit in this regard before 2nd of next month, the next date of hearing.<br/><br/>The bench said, DGCA and CPCB, after consultation with experts, would file an affidavit and state whether under any circumstances, intentionally or unintentionally, it is possible for an<br/>aircraft to release any waste during flights. <br/><br/>The direction came after the counsel, appearing for DGCA, told the tribunal that the regulator has gone through the<br/>report of a three-member committee and concluded that it is impossible to empty the waste tanks of the aircraft mid-air.