Special Correspondent

CHENNAI: The Monopulse Secondary Surveillance Radar (MSSR) at the Chennai airport was shut down for sometime on Sunday for maintenance work. It was shut down from 8 a.m., airport sources said. Arrival and departure of several flights were delayed and an aircraft was diverted to another airport. Airports Authority of India (AAI) officials said that following the shut down, the Air Traffic Control tower reverted to degraded mode of operation.

With the absence of radar, departures were staggered during the day.

A senior AAI officer said that they informed the airline operators nearly ten days ago about the proposed maintenance shut down.

The MSSR was restored around 10.30 p.m.