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Certified Airport NOC Survey and AAI Height Clearance services across India. Covers RTK-GNSS coordinate certification (WGS-84, ±5cm accuracy), AMSL elevation surveys, OLS analysis as per ICAO Annex 14, and complete NOCAS portal filing assistance for civil and defence airport NOCs. Pan-India coverage with a 98% first-attempt approval rate — mandatory under GSR 751(E) for any structure within 20km (VFR) or 56km (IFR) of an airport.


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