Bengaluru: Biocon chairperson Kiran Mazumdar-Shaw has expressed disappointment over reports that the Centre has declined to grant defence clearance for the proposed airport at Hosur, a project widely seen by industry leaders and residents as crucial to easing aviation pressure on the Bengaluru region. Her remarks have reignited a long-running debate on the urgent need for a second airport to support the city’s growing population, economy and air traffic demand.

Reacting on social media platform X, Mazumdar-Shaw wrote, “That’s a big disappointment to south Bangalore residents. Hope this gets compensated by the proposed Kanakapura site.” Her statement quickly drew attention from policymakers, urban planners and netizens, many of whom echoed her concerns about the lack of progress on a secondary airport for India’s technology capital.

Hosur airport proposal and its significance

The Hosur airport project, proposed by the Tamil Nadu government, has for several years been positioned as a strategic alternative to Kempegowda International Airport (KIA). Its location, close to the Karnataka–Tamil Nadu border, makes it particularly attractive for residents of south Bengaluru, as well as for the city’s southern industrial and IT corridors.

For many commuters living in areas such as Electronic City, Bannerghatta Road, Kanakapura Road and parts of Hosur Road, travel to KIA in north Bengaluru often takes between two and three hours during peak traffic. Proponents of the Hosur airport have argued that a functional airport at Hosur could significantly reduce travel time, decongest city roads and distribute air traffic more evenly across the region.

Industry bodies have also highlighted that the Hosur–Bengaluru belt is emerging as a major manufacturing and aerospace hub, with investments running into several thousand crore rupees. An airport in close proximity, they argue, would boost ease of doing business and attract further domestic and foreign investment.

Defence clearance emerges as key roadblock

According to a report by The Hindu, the Ministry of Defence has once again denied clearance for the Hosur airport proposal, citing the need to preserve airspace for the operations of Hindustan Aeronautics Limited (HAL). HAL’s facilities in the region are considered strategically important, and the ministry reportedly maintained that civilian aviation activity could interfere with defence and testing operations.

A source quoted in the report said the decision was communicated through an official letter last week. “The Ministry communicated in a letter last week that HAL needed the airspace and denied the request. Now, the State government will begin evaluating its options on the further course of action and what needs to be done,” the source said.

Another official expressed dissatisfaction over the lack of formal engagement between the Centre and the Tamil Nadu government before the rejection. “It is disappointing that the request has been denied even without a discussion. If a meeting was held between the Tamil Nadu Government and Ministry of Defence, the government could have had a chance to explain,” the official was quoted as saying.

Impact on Bengaluru’s aviation capacity

Kempegowda International Airport, Bengaluru’s only operational airport, has seen rapid growth in passenger traffic over the past decade. Handling more than 3.7 crore passengers annually, KIA is already among the busiest airports in India. With Bengaluru’s population expected to cross 1.5 crore in the coming years and air travel demand rising steadily, aviation experts have repeatedly warned that a single airport may not be sufficient in the long term.

While KIA has undertaken expansion projects, including additional runways and terminals, critics argue that capacity augmentation alone may not fully address issues related to accessibility, travel time and regional balance. The Hosur airport was often cited as a complementary facility rather than a competitor to KIA.

Kanakapura and other alternatives back in focus

Mazumdar-Shaw’s reference to the proposed Kanakapura site has brought renewed attention to alternative locations being considered for Bengaluru’s second airport. The Karnataka government has, in the past, identified areas such as Kanakapura Road, Bidadi and Tumakuru as potential sites, though none have reached the execution stage.

With Hosur appearing to be off the table for now, social media users and civic groups have urged the state and Centre to expedite decision-making on an alternative site. “With Hosur off the table, the pressure is on to fast-track the Bengaluru second airport decision. South Bengaluru needs a definitive timeline,” one user wrote on X.

Others cautioned that airport planning should not be driven solely by regional convenience. Some argued that factors such as airspace availability, environmental impact, connectivity and long-term strategic value must take precedence. Suggestions ranged from developing Tumakuru as a full-fledged aviation hub to exploring the possibility of a secondary airport dedicated to domestic or regional flights.

Broader debate on infrastructure planning

The latest setback has also sparked a broader discussion on Centre–state coordination in infrastructure planning. Analysts point out that prolonged delays and lack of clarity can deter investors and slow down regional development. Several industry leaders have called for structured consultations between the Centre, state governments and defence authorities to find mutually acceptable solutions.

At the same time, defence experts have emphasised the importance of safeguarding strategic airspace, particularly in regions associated with aerospace manufacturing and testing. Balancing civilian infrastructure needs with national security considerations remains a complex challenge.

Conclusion

Kiran Mazumdar-Shaw’s public expression of disappointment has brought renewed urgency to the debate over Bengaluru’s second airport. While the denial of defence clearance for the Hosur project represents a significant setback for proponents, it has also sharpened focus on alternative sites and the need for a clear, time-bound roadmap. As Bengaluru continues to expand economically and demographically, the question of how and where to build additional aviation infrastructure is likely to remain at the centre of policy discussions in the months ahead.