Several NOTAMs had been issued for Ahmedabad airport, specifically for the absence of approach lights; and for the glide path being absent from the Instrument Landing System, leaving only the localiser available. This still left VASI lights, VOR, DME, and localiser, which was sufficient to land aircraft even with visibility at 1600m. The Airport Authority said it was a mandatory requirement that the pilot be able to see the runway from 500 feet and that if the pilot had not seen the runway, he should have never descended below 500 feet, and if the runway was visible, he should have been able to land. The fact that the aircraft crashed 2.6 km from the airport showed that he had not sighted the runway.