A building height restriction near airport applies to any site within 20 km of a VFR airport or 56 km of an IFR airport, measured from the Aerodrome Reference Point (ARP). Your maximum height is the Permissible Top Elevation (PTE) set by AAI minus your site’s ground elevation. You need an AAI NOC before construction […]
How Long Does It Take to Get an AAI NOC? Realistic Timeline
Ask five different consultants how long AAI NOC approval takes, and you’ll likely get five different answers. Some say two weeks. Others say three months. Neither answer is wrong, exactly. It depends entirely on what kind of application you file, and how clean your data is going in. AAI’s official service charter promises NOC approval […]
Top 10 Reasons Airport NOC Applications Get Rejected
Nearly half of all height clearance applications filed with AAI don’t get approved on the first attempt. That’s not an exaggeration for effect. It’s a documented pattern, and understanding it can save your project months. In short, the most common airport NOC rejection reasons involve technical data errors, not paperwork gaps. Wrong coordinate formats, certificate […]
What is Colour Coded Zoning Map (CCZM) and Why It Matters
Ever wondered why some buildings near an airport get approved by the local municipal office in days, while others wait months for AAI’s sign-off? The colour coded zoning map AAI system is usually the answer. The colour coded zoning map AAI publishes is a grid-based map that shows the Permissible Top Elevation (PTE) for every […]
Documents Required for Airport Height Clearance NOC in India
Documents Required for Airport Height Clearance NOC in India Do you have your building drawings ready but no idea which certificates AAI actually wants? This is exactly where most airport NOC applications stall. Not because the applicant did anything wrong on purpose. Rather, because the required document list changes depending on what you’re building. The […]
How to Apply for AAI NOC Online via NOCAS Portal — Step by Step
Do you need an Airport NOC for your building, tower, or telecom mast, but you don’t know where to start? You are not alone. Every year, thousands of applicants sit down at the AAI’s NOCAS portal for the first time and get stuck within minutes — wrong coordinate format, missing document, or a structure type […]
AAI NOC vs DGCA Clearance
AAI NOC vs DGCA Clearance — What’s the Difference? Ask ten people involved in construction near an Indian airport what DGCA clearance means, and you will likely get ten different answers. Some call it a separate approval. Others use it interchangeably with the AAI NOC. In reality, neither is fully correct, and this confusion causes […]