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Airport NOC Survey Services in India

Airport NOC Survey Services in India

Airport NOC Survey Services India | AAI Height Clearance | SurveyingIndia
Certified Survey Professionals — Pan-India

Airport NOC Survey
& AAI Height Clearance
Services in India

Precision-driven geospatial surveys for buildings, towers & structures near airports. We handle every stage — from certified site coordinates to NOCAS filing — so your project advances without delays.

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Our Track Record
500+
Airport NOC Surveys Completed
28+
States Covered Across India
98%
First-Attempt NOC Approval Rate
72h
Average Survey Completion Time
✅ GSR 751(E) Compliant
✅ ICAO Annex 14 Standards
✅ AAI & DGCA Recognised
✅ WGS-84 Certified Coordinates
✅ ISO-Grade Survey Equipment
✅ Pan-India Coverage
⚖️

Statutory Requirement: Under the Government of India's Gazette Notification GSR 751(E), obtaining an Airport NOC is a mandatory legal prerequisite before commencing construction of any structure within 20 km of a VFR airport or 56 km of an IFR airport. Non-compliance may result in demolition orders and legal liability. View AAI NOCAS Portal →

What Is It?

Airport NOC Survey — Defined with Precision

An Airport NOC Survey is a specialised topographic and geospatial survey that establishes the certified coordinates, ground elevation (AMSL — Above Mean Sea Level), and proposed structural height of a construction site located in the vicinity of an airport. These precise measurements form the technical backbone of an NOC (No Objection Certificate) application filed with the Airports Authority of India (AAI) through the official NOCAS portal.

Beyond mere data collection, our survey process encompasses obstacle limitation surface (OLS) analysis, Colour Coded Zoning Map (CCZM) interpretation, and complete documentation in the standardised format accepted by AAI's regional NOC cells — ensuring your application clears technical scrutiny at the first submission.

Key Insight: The most common reason for Airport NOC rejection is inaccurate GPS coordinates and incorrect AMSL elevation data. SurveyingIndia uses RTK-GNSS survey-grade instruments to deliver data precision within ±5 cm — eliminating the primary cause of application delays.
// Technical Glossary

Key regulatory terms you will encounter during the Airport NOC process:

AAIAirports Authority of India — the statutory body issuing NOCs for civil aerodromes
NOCASNo Objection Certificate Application System — AAI's official online filing portal
AMSLAbove Mean Sea Level — elevation reference standard for all height clearance filings
OLS SurveyObstacle Limitation Surface Survey — maps the protected airspace around a runway
GSR 751(E)Central Govt. gazette notification mandating airport NOC compliance
ARPAerodrome Reference Point — the official centre point from which NOC distances are measured
WGS-84World Geodetic System 1984 — the coordinate standard required by AAI/NOCAS
CCZMColour Coded Zoning Map — AAI's published height restriction grid for airports
What We Offer

Comprehensive Airport NOC Survey Services

From initial site assessment to final certificate delivery, every facet of the Airport NOC process is handled by our certified professionals.

📍

Precise GPS Coordinate Certification

RTK-GNSS based site surveys delivering WGS-84 coordinates with ±5 cm horizontal accuracy — the exact standard required by AAI's NOCAS portal.

📐

AMSL Elevation Survey & Certificate

Certified Above Mean Sea Level elevation reports prepared by licensed surveyors — accepted by CPWD, State PWD, AAI, and all regulatory authorities.

✈️

OLS (Obstacle Limitation Surface) Survey

Comprehensive Obstacle Limitation Surface analysis as per ICAO Annex 14, identifying whether your structure infringes on protected airspace zones.

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NOCAS Application Filing Assistance

End-to-end documentation preparation and NOCAS portal filing — from applicant registration through technical submission, handled by our regulatory experts.

🛡️

Defence Airport NOC Survey

Specialised surveys for structures near Ministry of Defence (MoD) aerodromes, requiring separate NOC applications through the defence aerodrome operator.

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NOC Revalidation & Appeal Support

Expert assistance for NOC revalidation applications, height revision requests, and appellate committee filings when the initial NOC height requires review.

Also explore our related services: Drone Survey & Mapping, Land Boundary Survey, and Topographic Survey.

How It Works

Our Airport NOC Survey Process

A transparent, step-by-step workflow engineered to minimise delays and maximise your NOC approval probability.

01

Site Feasibility Assessment

We determine your site's distance from the nearest ARP, identify the applicable airport type (VFR/IFR), and review the CCZM to establish whether an NOC filing is mandatory for your proposed height.

02

RTK-GNSS Survey & Elevation Measurement

Our certified surveyors conduct an on-site survey using RTK-GNSS instruments to capture WGS-84 coordinates and AMSL ground elevation with centimetre-level precision.

03

OLS Analysis & Compliance Report

We perform a detailed Obstacle Limitation Surface analysis against your proposed structure height, producing a compliance assessment report referencing ICAO Annex 14 criteria.

04

Documentation Preparation

All NOCAS-required documents are compiled: elevation certificate, GPS coordinate certificate, site plan, structural drawings review, and the signed declaration undertaking — in the exact format specified by AAI.

05

NOCAS Portal Submission & Tracking

We register on the AAI NOCAS portal (if needed), file the complete application, and track it through AAI's regional NOC cell scrutiny and technical evaluation stages.

06

NOC Receipt & Post-Approval Compliance

Upon NOC issuance, we brief your team on compliance requirements including aviation obstruction lighting, day marking standards, and validity timelines (up to 8 years for buildings; 12 years for masts/chimneys).

Regulatory Framework

The Legal & Technical Authorities We Work With

Every Airport NOC Survey we conduct is aligned with India's comprehensive civil aviation regulatory ecosystem.

Airports Authority of India (AAI)

The statutory body that issues No Objection Certificates for height clearance on behalf of the Central Government for all civil aerodromes. All NOC applications for civil airports are filed through AAI's NOCAS portal.

Directorate General of Civil Aviation (DGCA)

India's apex civil aviation regulatory authority. DGCA oversees airspace safety and final aeronautical clearance for structures that may impact instrument flight procedures near airports. Learn more at dgca.gov.in.

GSR 751(E) — The Governing Gazette Notification

Issued September 30, 2015, this Government of India Statutory Order replaced earlier notification SO 84(E) and makes it mandatory to obtain NOC for height clearance prior to commencement of construction near all aerodromes in India.

ICAO Annex 14 — International Standards

AAI evaluates all NOC applications against the Obstacle Limitation Surfaces prescribed in ICAO Annex 14 — the international standard for aerodromes. Our OLS surveys are conducted in full conformance with these global benchmarks.

Ministry of Defence (MoD) — Defence Airport NOCs

Structures near defence aerodromes require a separate NOC from the respective MoD aerodrome operator. SurveyingIndia manages this distinct, often more complex, application pathway for clients in defence-controlled zones.

Survey of India

India's national mapping agency. Site coordinates and elevation data obtained or certified in accordance with Survey of India standards are recognised by AAI for NOCAS applications — our survey methodology fully adheres to these benchmarks. See surveyofindia.gov.in.

Pan-India Presence

Airport NOC Survey Services Across India

From metropolitan centres to Tier-2 cities — wherever your project is located, our certified survey teams are ready to mobilise.

Delhi / NCR
Mumbai
Bengaluru
Hyderabad
Chennai
Kolkata
Pune
Ahmedabad
Jaipur
Lucknow
Chandigarh
Kochi
Nagpur
Indore
Bhopal
Varanasi
Patna
Raipur
Guwahati
All India
Expert Answers

Airport NOC Survey — Frequently Asked Questions

Precise answers to the questions most commonly raised by developers, architects, and project managers.

An Airport NOC Survey is a certified geospatial survey that records the precise coordinates and elevation of a proposed construction site within the influence zone of an airport. It is legally mandated under GSR 751(E) — any structure within 20 km (VFR airports) or 56 km (IFR airports) requires a No Objection Certificate from AAI before construction begins. The survey data is the foundational technical evidence for this application.
Developers, builders, property owners, telecom companies, power utilities, and government bodies planning to construct any building, communication tower, chimney, transmission line, billboard, or temporary structure within the prescribed distance zones of any civil or defence aerodrome in India. The obligation applies regardless of the structure's ownership or purpose.
The core documents include: (1) Certified GPS coordinates in WGS-84 format, (2) Ground elevation certificate (AMSL), (3) Structural design drawings and elevation plans, (4) Site plan with surrounding context, (5) Land ownership documents or lease deed, (6) Authorization letter if the applicant is not the owner, (7) Signed undertaking declaration as per NOCAS requirements, and (8) Applicable fee payment confirmation. SurveyingIndia prepares all survey-related documentation in the precise format.
The physical survey is typically completed within 2–5 working days. Documentation preparation takes an additional 2–3 days. Once submitted through NOCAS, AAI's technical scrutiny and approval typically takes 30–60 days depending on the airport and complexity. Errors in survey data or documentation are the primary cause of delays — our 98% first-attempt approval rate eliminates this risk.
Not necessarily. An NOC is not required if your site is beyond 20 km of a VFR airport or beyond 56 km of an IFR airport, and if the proposed height is below 150 m above ground level. Additionally, if the proposed height does not exceed the permissible top elevation shown on AAI's Colour Coded Zoning Map (CCZM) for that area, no NOC may be required. We provide a free pre-assessment to determine your site's specific compliance requirement.
NOCAS — No Objection Certificate Application System — is the official online platform launched by AAI for all height clearance applications. Accessible at nocas.aai.aero, it enables paperless filing, document upload, application tracking, and revalidation requests. SurveyingIndia's experts handle the entire NOCAS filing process on your behalf.
A Civil Airport NOC is issued by AAI via the NOCAS portal for structures near civilian aerodromes. A Defence Airport NOC is issued by the Ministry of Defence (MoD) through the relevant defence aerodrome operator and involves a separate application process with different documentation requirements. Many sites fall within the influence zones of both types of airports simultaneously, requiring two separate NOC applications.
Yes. SurveyingIndia provides Airport NOC Survey services across all 28 states and 8 Union Territories of India, including major metros — Delhi, Mumbai, Bangalore, Chennai, Hyderabad, Kolkata — and all Tier-2 and Tier-3 cities. Our national network of certified survey professionals ensures rapid mobilisation and consistent quality across geographies.

Ready to Begin Your Airport NOC Survey?

Speak with a certified survey expert today. Free site assessment, transparent pricing, and a proven process that eliminates delays.

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