Mumbai, Oct. 14 -- The Mumbai Metropolitan Region Development Authority (MMRDA) has resumed construction of Metro Line 7A, months after suspending work over a breach of height restrictions in the air funnel zone of Chhatrapati Shivaji Maharaj International Airport (CSMIA), even as it awaits final clearance from the Airports Authority of India (AAI), officials said.

A design error near Vile Parle East had put a 1-km elevated stretch of the 3.4-km corridor at risk of demolition because the height of the overhead wires exceeded the Airports Authority of India (AAI) limits by 2.5 metres.

The MMRDA is still awaiting a final decision from AAI regarding height clearance. However, it has decided to resume construction nonetheless, two MMRDA off...