New Delhi: Airports Authority of India will
come up in a couple of days with its preliminary report on the
causes of air navigation system crash at the IGI airport last
week that led to disruption of flights for about two hours
during peak time.
"The probe into the reasons of crash of the navigation
system is going on and the report is likely to be ready by
Monday or Tuesday," a senior AAI official said today.
The Directorate General of Civil Aviation is also holding
a parallel inquiry.
He said it was to early to say anything about the reasons
behind the incident. "The exact cause would be clear once the
investigation is complete."
AAI officials, along with US-based Raytheon company which
was upgrading the AutoTrack II system, have been trying to
ascertain the causes behind the incident which led to a chaos
in the sky for a considerable time with no flights taking off
and very few landing after being manually guided by the air
However, initial findings have indicated that an attempt
to revive a radar console led to the crash of entire radar
AutoTrack-II system, the official said.
Though attempts were made to switch over to an upgraded
version AutoTrack-III, which was being used in a shadow mode
on trial basis for the past six months, it could not be made
operational at that time.
The ATC officials had to reboot the entire system which
took about two hours.