Bengaluru’s 2nd Airport in Trouble? AAI Report Flags Terrain, Airspace, and Cost Challenges

The Airports Authority of India (AAI) has highlighted multiple concerns across the three proposed sites for Bengaluru’s second international airport. Instead of recommending a particular site, the report identifies challenges related to terrain, restricted airspace, environmental factors, and the potential impact on existing airports. The findings have left government officials, industry stakeholders, and citizens questioning whether the long-anticipated airport project is moving closer to reality.

The AAI expert team conducted detailed inspections of Nelamangala off Kunigal Road, Chudahalli, and Somanahalli near Kanakapura Road. The three sites span between 4,530 and 5,200 acres and are located 30–35 km from Bengaluru’s central business district. Each site has distinct advantages but faces execution and operational challenges that could influence the final site selection.

Nelamangala, covering 5,200 acres off Tumakuru Highway, presents rocky hillocks on the northeastern and western sides that need significant levelling. Restricted airspace near Kempegowda International Airport (KIA), AFE Yelahanka, and HAL airports may limit safe aircraft movements. Additional topographic and obstacle-limitation surface surveys are required, and levelling could substantially increase project costs, raising financial and technical concerns.

Situated near Taralu off Kanakapura Road, Chudahalli’s rocky terrain requires extensive levelling. Hillocks within the Bannerghatta National Park area on the eastern side may obstruct flight approaches, necessitating environmental clearance from the ministry. Defence, civil aviation, and KIA NOCs are also required, highlighting the complex regulatory approvals needed for execution.

The 4,530-acre Somanahalli site near the Kanakapura Road toll plaza faces significant operational challenges due to rocky terrain. Hillocks on both eastern and western sides must be removed if they pose navigational hazards. Restricted airspace overlapping KIA, HAL, and Hosur airstrip could limit aircraft movement, while levelling costs are expected to escalate, increasing overall project expenditure.

Every proposed site requires a range of approvals including NOCs from the defence ministry, civil aviation authorities, and KIA. Environmental clearance is particularly crucial for Chudahalli and Somanahalli due to proximity to Bannerghatta National Park, which involves wildlife sensitivity and noise considerations. Topographic and obstacle-limitation surveys are essential for assessing feasibility and safety. (Credit- AI Image)

Levelling rocky surfaces, trimming or removing hillocks, and addressing restricted airspace challenges will significantly increase construction and operational costs. The project’s financial viability depends on a detailed techno-economic study to evaluate the cumulative cost, logistical hurdles, and long-term operational efficiency before committing to a site. (Credit- AI Image)

Minister MB Patil, in charge of heavy, medium industries, and infrastructure, confirmed that a detailed feasibility study will be commissioned. The study will assess financial, technical, and environmental factors, providing a clear comparison of all three sites and guiding the government in selecting the most suitable location for Bengaluru’s second international airport.

Experts note that AAI reports follow a standard national template designed to outline the advantages and challenges of each site rather than recommending a particular location. The report highlights terrain difficulties, airspace limitations, environmental considerations, and regulatory hurdles, serving as a foundational document for further decision-making rather than a final verdict. (Credit- AI Image)

Following the feasibility study, the government will be able to make an informed decision based on detailed comparisons of cost, safety, environmental impact, and operational feasibility. Once the most suitable site is selected, execution plans can begin, potentially bringing Bengaluru closer to realizing its long-standing ambition of a second international airport that can ease traffic at KIA and support future growth. (Credit- AI Image)