Mumbai: The international airports here and at New Delhi have secured global rankings at the Airport Council International's (ACI's) airport service quality awards.

While the Indira Gandhi International Airport in Delhi has listed second, the Chhatrapati Shivaji International Airport stands at fourth position among 180 airports surveyed by the ACI for their performance in 2011, statements issued by managements of both the airports said.

Both the airports fall under the 25-40 million passengers per annum category.

The survey measures feedback on a range of service delivery parameters that track the customer experience at an airport from the moment of arrival to the departure gate.

The Delhi International Airport, which counts the GMR Group, Airports Authority of India, Malaysian Airport Holdings and Fraport AG among its stakeholders, runs the Indira Gandhi International Airport while the city's Chhatrapati Shivaji International Airport is operated and managed by the GVK Group.