Tuesday, July 19, 2011


Neelam Mathews
July 19, 2011
Time- 3:05pm IST

Even as the BASA was signed between Secretary ministry of civil aviation and Nasim Zaidi and FAA administrator J. Randolph Babbitt yesterday, USTDA Director Lee Zak will be signing an agreement at 5 pm today with Airports Authority of India Chairman V.P Agrawal.

USTDA has approved a $500,000 grant to Honeywell that will be supplying ground stations of the GBAS for the Chennai International Airport. The grant money will be used for FAA certification for the systems and more.

The Ground-Based Augmentation System (GBAS) is a safety-critical system that augments the GPS Standard Positioning Service (SPS) and provides enhanced levels of service. It supports all phases of approach, landing, departure, and surface operations within its area of coverage.

The current Instrument Landing System (ILS) suffers from a number of technical limitations such as, VHF interference, multipath effects (for example due to new building works at and around airports), as well as ILS channel limitations. GBAS is expected to play a key role in maintaining existing all-weather operations capability at CATI/II and III airports. GBAS CAT-I is seen as a necessary step towards the more stringent operations of CAT-II/III precision approach and landing.

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