AGL CONSULTANT INDIA
Aerodrome Ground Lighting design and consultancy for runway, taxiway and approach lighting, PAPI, CCR, ILCMS, photometry, testing and commissioning — aligned with ICAO and DGCA requirements.
Specialist engineering support for airport owners, EPC contractors, consultants and project developers across the complete AGL lifecycle.
What Does an AGL Consultant in India Do?
An AGL consultant in India provides specialist engineering support for the planning, design, specification, testing, commissioning, modernization and maintenance of Aeronautical Ground Lighting (AGL) systems at airports and aerodromes.
AGL consultancy combines airport engineering, electrical engineering, optics, pavement interfaces, control systems and aviation regulatory requirements. The consultant acts as the specialist technical interface between the airport's operational requirement and the installed lighting system — from initial concept through final commissioning.
In India, the work has to consider the applicable DGCA requirements, the ICAO framework, airport / operator requirements and the approved project specifications. The DGCA aerodrome framework was amended during 2025, including amendments to CAR Section 4, Series B, Part I, to incorporate ICAO changes and requirements associated with airport development.[1]
The scope varies according to whether the project is a new airport, runway extension, taxiway expansion, AGL rehabilitation or an operational upgrade.
Why Airport Projects Need Specialist AGL Consultancy
AGL is not ordinary external lighting. A runway light has to perform a defined visual function from a specific aircraft viewing geometry, and a series-circuit system behaves electrically very differently from conventional parallel lighting.
Optical performance
Electrical performance
Aerodrome geometry
Control & monitoring
Airport operations
Regulatory compliance
A system can be electrically functional and still have an optical or geometric deficiency. Similarly, a technically compliant fixture can be incorrectly installed. This is why specialist AGL consultancy is valuable during both design and field implementation.
AGL Standards and DGCA Compliance in India
A practical standards hierarchy for an Indian airport runs from the international framework down to the installation and testing procedure.
ICAO
DGCA
Airport / AAI / operator
Approved aerodrome design
Project technical specification
Equipment specification
Installation & testing procedure
ICAO
ICAO Annex 14, Volume I is the principal international aerodrome reference. ICAO's catalogue lists the 9th Edition (July 2022), including Amendment 18 dated 4 August 2025 and subsequent corrigenda issued in 2026.[2] For visual aids, ICAO also publishes Aerodrome Design Manual Part 4 — Visual Aids (Doc 9157). ICAO's AGL training material describes AGL design as implemented in accordance with Annex 14, Doc 9157 and industry best practices.[3]
DGCA
An AGL consultant in India should identify the current DGCA requirements applicable to the aerodrome before beginning detailed design. ICAO should not be treated as the only controlling document — DGCA requirements and airport-specific approved documents must also be checked.
Operational requirement first
DGCA approvals for CAT-II low-visibility operations at Raipur and Bhopal during 2025, and an approach-lighting upgrade at IGI Airport for CAT-II/III operations, show why design must follow the operational requirement, not merely the existing installation.[1]
A consultant should convert ICAO and DGCA requirements into practical design outputs — layouts, schedules, specifications and test procedures — rather than simply quoting standards.
Runway, Taxiway and Approach Lighting Consultancy
The consultant should verify that proposed equipment and installation arrangements match the approved aerodrome design for each lighting system.
Runway Lighting
Design assessment considers runway geometry, designation, approach type, operational category, lighting configuration, fixture characteristics, circuit arrangement and photometric performance.
- Runway edge lights
- Threshold lights
- Runway end lights
- Centreline lights
- Touchdown zone lights
Taxiway Lighting
The design should consider the complete aircraft movement route. On larger airports taxiway lighting may be integrated with surface movement guidance and control systems.
- Taxiway edge lights
- Taxiway centreline lights
- Stop bars
- Runway guard lights
- Associated signs
Approach Lighting
One of the most design-sensitive parts of an airport lighting project. The system must provide the intended visual pattern from the aircraft approach environment.
- Configuration and centreline
- Crossbars
- Elevated structures / inset fixtures
- Circuits and control
- Obstruction considerations
- Field alignment and photometry
A current AAI example is NSCBI Airport, Kolkata, where AAI published a 2026–2028 contract for operation and maintenance of the Aeronautical Ground Lighting System with ILCMS for CAT-I/II/III facilities.[4]
PAPI Consultancy, Design and Alignment
PAPI consultancy is a specialist AGL service. PAPI should be designed from the approved runway geometry and operational requirement rather than using a generic installation distance.
Site Assessment
- Runway survey
- Threshold elevation
- Longitudinal profile
- Surrounding terrain
- Obstacle environment
Design
- PAPI location and elevation
- Spacing
- Approach slope
- Individual aiming angles
- Threshold-crossing geometry
Installation
- Foundation
- Unit positioning
- Horizontal and vertical alignment
- Cable connection
Commissioning
- Aiming
- Photometry
- Colour and intensity
- Beam coverage
- Documentation
Alignment Verification
A PAPI system can be electrically healthy but geometrically incorrect. The consultant verifies the items at left, and an alignment survey can also establish a baseline for future maintenance.
- Horizontal position and elevation
- Longitudinal relationship to threshold
- Unit spacing and individual aiming
- Mechanical stability
AGL Electrical Design: CCR, Transformers, Cables & Bases
The electrical system is the backbone of conventional AGL. A typical series circuit runs from the airport supply through the CCR and primary cable to isolation transformers and the fixture.
Airport electrical supply
CCR
Primary AGL cable
Isolation transformer
Secondary cable
AGL fixture
CCR Selection
Selection requires more than matching the nominal current. Consider circuit current and load, fixture load, transformer characteristics, number of fixtures, circuit length, regulation, brightness stages, control interface, monitoring and LED compatibility. Where an FAA equipment specification is used, treat it separately from ICAO/DGCA aerodrome design requirements.
Isolation Transformers
Specified and verified for runway, taxiway, approach, centreline and threshold lights, PAPI and signs. Selection considers primary current, secondary requirement, frequency, load, installation environment, connector compatibility and fixture technology.
Cables & Connectors
Develop the cable and connector philosophy together with the series-circuit design: primary cable, route, joints, terminations, transformer and fixture connections, spare capacity, insulation and mechanical protection. Connector quality matters — one small fault can affect a fixture's reliability.
Light Bases & Housings
Coordinate the mechanical interface — light bases (deep and shallow), transformer housings, junction boxes and mounting hardware — addressing finished elevation, drainage, pavement interface, cable access, mechanical loading and maintainability.
ALCMS / ILCMS and Secondary Power Consultancy
For larger airports the lighting control and monitoring system becomes an important engineering package, and secondary power is critical for visual aids associated with low-visibility operations.
Operator
ALCMS / ILCMS
CCR / field controller
AGL circuit
…and the reverse monitoring path from circuit back to operator.
ALCMS / ILCMS Scope
- System architecture
- CCR and circuit control
- Intensity selection
- Status monitoring and alarm handling
- Communication and redundancy
- Operator interfaces
- Interface with airport systems
Secondary Power Scope
- DG sets and UPS
- Automatic transfer
- Distribution
- Critical AGL circuits
- Switch-over performance
- Redundancy and capacity
Published 2026 aerodrome information in the Indian AIP shows runway lighting supported by standby power and references the applicable DGCA switch-over requirements.[5] The exact design should follow the current regulatory requirement and the airport operating procedure.
AGL Consultancy for CAT-II / CAT-III and Low-Visibility Operations
Low-visibility operations place additional demands on AGL reliability and require a higher level of integration between lighting, navigation and power systems.
Indian AIP publications show that airports maintain defined AGL serviceability criteria, standby-power provisions and operational restrictions for Low Visibility Procedures.[5] An assignment for CAT-II/III or other low-visibility operations should therefore include both system design and operational serviceability analysis — an operational-readiness perspective, not only an equipment design review.
AGL Photometry and 4C Field Testing Consultancy
Photometric testing measures actual field performance. A light being ON does not establish its complete optical compliance.
Photometry Consultancy
A consultant can develop:
- Photometric test plans
- Measurement geometry
- Test schedules and fixture identification
- Intensity test procedures
- Colour verification and coverage checks
- Reporting formats
- Corrective-action processes
AGL 4C Testing
Field assessment can include practical verification of:
- Colour
- Coverage
- Configuration
- Chromaticity
AAI continues to procure dedicated AGL photometric field-testing services: a 2026 AAI tender at Madurai Airport covers photometric field testing of AGL and submission of test reports, and an AAI tender for Rajkot International Airport described in-field photometric testing around the 4C parameters.[6]
The consultant should ensure that the test method, equipment, measurement geometry and acceptance criteria are explicitly linked to the applicable project requirement.
AGL Inspection, Testing and Commissioning Consultancy
A consultant can perform independent technical inspections and develop the complete commissioning plan.
Material Inspection
- Equipment model and specifications
- Physical condition
- Certificates
- Accessories
Installation Inspection
- Location, orientation, elevation
- Cable routing
- Transformer installation
- Connectors, bases, fixture mounting
Electrical Inspection
- Circuit continuity
- Insulation
- CCR operation
- Transformer condition, control
Optical Inspection
- Intensity and colour
- Alignment
- Beam coverage
- Photometry
Stage 1 — Pre-commissioning
Installation, cable, connector, transformer, fixture and CCR checks.
Stage 2 — Electrical
Continuity, insulation, circuit testing, transformer checks, CCR testing.
Stage 3 — Functional
Circuit switching, brightness stages, remote control, monitoring, alarms.
Stage 4 — Optical
Intensity, colour, coverage, alignment, photometry.
Stage 5 — Final: integrated test, punch-list, corrective work, retesting and documentation.
AGL Design, BOQ, Specification and Tender Support
Design flows from operational requirement → lighting design → electrical design → equipment selection. A BOQ should be built from the approved design and quantities, not from a generic equipment catalogue.
Design Basis
- Applicable standards
- Operational assumptions
- Airport data and design criteria
Lighting Layouts
- Runway
- Taxiway
- Approach
- PAPI and signs
Electrical
- CCR, circuit, transformer and cable schedules
- Single-line diagram
- Load calculations
Civil
- Light bases and transformer housings
- Cable ducts and chambers
- Foundations
Control
- ALCMS / ILCMS architecture
- Control philosophy
- Interface diagrams and alarms
Testing
- FAT and SAT
- Commissioning
- Photometry and PAPI testing
| Package | Typical scope |
|---|---|
| Runway | Edge, threshold, end, centreline, TDZ |
| Taxiway | Edge, centreline, stop bars, guard lights |
| Approach | Fixtures, structures, fittings |
| PAPI | Units, bases, transformers, cables |
| Electrical | CCRs, transformers, cables, connectors |
| Civil | Bases, chambers, ducts |
| Control | ALCMS / ILCMS, panels, communication |
| Testing | Electrical, photometric, commissioning |
| Spares | Fixtures, transformers, connectors, critical parts |
| Services | Installation, supervision, testing, training |
Specifications can be developed for runway, taxiway and approach lights, PAPI, CCR, isolation transformers, cable, connectors, bases, signs and ALCMS/ILCMS. A good specification defines application → performance → electrical → optical → mechanical → environmental requirements → testing → documentation, and avoids unnecessary brand dependence unless a proprietary requirement is justified.
Support can include technical BOQ, specification, tender drawings, compliance schedules, vendor queries, bid evaluation, deviation analysis and clarification responses. Offers should be compared against the project requirement, not just a manufacturer's catalogue.
| Parameter | Evaluation |
|---|---|
| Regulatory compliance | Pass / Deviation |
| Optical performance | Compliant / Deviation |
| Electrical characteristics | Compliant / Deviation |
| Mechanical construction | Compliant / Deviation |
| Environmental performance | Compliant / Deviation |
| CCR compatibility | Compliant / Deviation |
| Control compatibility | Compliant / Deviation |
| Testing documentation | Available / Missing |
| Service support | Acceptable / Not acceptable |
| Spares | Compliant / Deviation |
This separates genuine technical compliance from marketing claims. A product should also be evaluated through its complete system interface — for example, an LED AGL fixture must be assessed together with the isolation transformer, secondary connector, CCR, primary circuit, control system and photometric requirement. A component should not be accepted solely because it has an appropriate nominal voltage or current rating.
Site Supervision and As-Built Documentation
During construction, an AGL consultant verifies that the installed system matches the approved drawings and that deviations are documented.
Site Supervision
- Setting out
- Base and fixture installation
- Cable routing
- Transformer installation and connector assembly
- CCR installation and control wiring
- PAPI installation
- Approach-lighting structures
As-Built Records
As-built documentation is particularly important for airport maintenance. Final records should identify:
- Fixture locations and circuit numbers
- Transformer locations
- Cable routes
- CCR connections and control points
- PAPI coordinates / elevations
- Equipment identification
Digital asset information can then be integrated into airport maintenance systems.
AGL Maintenance, Reliability, Gap Assessment and Rehabilitation
For existing airports, consultancy can range from preventive maintenance planning to complete modernization.
Preventive Maintenance
- Fixture inspection and cleaning
- Connector and transformer checks
- CCR and cable checks
- Control-system checks
- PAPI checks
Corrective Maintenance
- Failed and low-intensity lights
- Intermittent circuits
- Transformer, cable and connector faults
- CCR and control faults
- PAPI misalignment
Periodic Performance
- Photometry
- Alignment verification
- Electrical testing
- System performance review
The result identifies whether the best solution is maintenance, component replacement, partial rehabilitation, CCR upgrade, LED conversion, cable replacement or complete AGL modernization.
Compare the existing system against the current requirement and identify compliant and partially compliant elements, obsolete equipment, operational risks, maintenance issues, documentation gaps and upgrade requirements. The report follows Gap → Risk → Required action → Priority → Estimated scope.
Fixture upgrade
Conventional to LED.
CCR upgrade
Old regulator to modern digital CCR.
Electrical upgrade
Cable, transformer and connector replacement.
Control upgrade
Local control to integrated ALCMS/ILCMS.
PAPI upgrade
Existing units to a new compliant system.
Photometric restoration
Identify poor-performing fixtures and rectify root causes.
Energy optimization
LED fixtures, efficient CCR operation, control optimization, centralized monitoring.
Validation
Upgrades must preserve required functionality and be validated by field testing.
AGL Training and Knowledge Transfer
A consultant can train electrical engineers, AGL technicians, maintenance teams, airport engineering personnel and project teams.
AGL Consultancy for Developers, EPC Contractors and Airport Operators
An independent consultant adds value where an objective technical assessment is needed — reviewing vendor submissions, installation quality, photometric reports, commissioning results and maintenance condition — reducing the risk of accepting equipment or installation based only on supplier documentation. A consultant need not be an equipment manufacturer.
Airport Developers
Early AGL involvement is valuable because cable routes, power rooms, bases and electrical infrastructure must be coordinated with civil works.
- Greenfield airports and runway extensions
- Taxiway and apron development
- Terminal expansion
- Low-visibility upgrades and modernization
EPC Contractors
Specialist airport-lighting expertise where the EPC team has no in-house AGL engineering department.
- Shop drawings and material submittals
- Compliance and design calculations
- Vendor coordination
- Installation supervision, testing, commissioning, as-builts
Airport Operators
- Existing-system assessment and maintenance audits
- Photometry and capacity studies
- Upgrade and replacement planning
- Tender preparation and technical evaluation
- Failure investigation
New airports: the consultant should ideally be involved at master-planning and detailed-design stages, following the sequence runway geometry → taxiway geometry → operational category → AGL configuration → electrical load → CCR / circuit design → cable network → civil interfaces → control system → testing. This prevents expensive redesign during construction.
AAI's continuing procurement of AGL operation, maintenance and photometric testing services illustrates the scale of specialist AGL support required by operating airports.[4]
AGL Consultant Deliverables, Reports and Quality Checklist
A professional consultancy package covers design through handover.
Design
- Design basis
- AGL layout
- Electrical design
- Control architecture
- PAPI and approach-lighting design
Procurement
- BOQ and specifications
- Datasheet requirements
- Compliance matrix
- Technical evaluation
Construction
- Shop drawing review
- Material and installation inspection
- Site reports
Testing
- Test procedures
- Electrical tests and photometry
- PAPI verification
- Functional and integrated testing
Handover
- Test reports and as-built drawings
- Asset register
- Commissioning documents
- Maintenance recommendations
Project
Scope
Applicable requirements
Existing condition
Assessment
Deficiencies
Risk
Recommendations
Corrective action
Verification
Conclusion
Regulatory
- Current DGCA requirements checked
- Applicable ICAO provisions checked
- Airport-specific requirements checked
- Approved design criteria identified
Design
- Runway, taxiway and approach lighting
- PAPI and signs
- Stop bars
- Runway guard lights
Electrical
- CCR, primary cable, isolation transformers
- Connectors and secondary cable
- Secondary power
- Earthing / protection
Control
- ALCMS / ILCMS and CCR control
- Monitoring and alarms
- Interfaces
Testing
- Electrical, functional, photometric
- PAPI and control
- Integrated system
Documentation
- BOQ and specifications
- Drawings and test reports
- As-builts and asset register
Common AGL Consulting Mistakes
Seven errors that specialist consultancy is designed to prevent.
Treating ICAO and FAA as interchangeable
They are different regulatory and technical frameworks.
Designing from equipment backwards
The correct sequence is operational requirement → lighting design → electrical design → equipment selection.
Using generic PAPI dimensions
PAPI location and geometry must be derived from the applicable design.
Accepting functional tests as photometry
A light being ON does not establish complete optical compliance.
Ignoring secondary power
Critical lighting availability depends on power-system design.
Ignoring control integration
Stop bars and critical AGL may depend on control and monitoring functions.
Producing incomplete as-builts
Future maintenance requires accurate asset and circuit information.
Why Choose a Specialist AGL Consultant — Precision AGL Solutions
A specialist brings together airport lighting, electrical engineering, PAPI, photometry, control systems, testing, maintenance and regulatory compliance — one technical approach from design through commissioning.
Design
Specification
Supply support
Installation support
Testing
Photometry
Commissioning
Maintenance
Precision AGL Solutions supports airport projects across the complete AGL lifecycle: AGL design, technical consultancy, equipment selection, BOQ and specification, installation support, PAPI engineering, photometric testing, testing and commissioning, AGL maintenance, troubleshooting and modernization.
The objective is not simply to install lights. It is to deliver an AGL system that is safe, reliable, maintainable, testable, operationally suitable, traceable and compliant with the applicable requirements.
AGL Consulting in India: Service Areas
Support is available for airport projects across India, including:
Frequently Asked Questions
What is an AGL consultant?
What does an AGL consultant do in India?
Which standards does an AGL consultant use?
Is ICAO Annex 14 enough for an Indian airport?
Can an AGL consultant prepare a BOQ?
Can an AGL consultant perform photometric testing?
Can an AGL consultant design PAPI?
Does an AGL consultant need to be an equipment manufacturer?
Can an AGL consultant evaluate AGL equipment vendors?
What is the difference between an AGL consultant and an AGL contractor?
Why is AGL photometry important?
Is AGL important for CAT-II/III operations?
Can an AGL consultant help with an existing airport?
Need an AGL Consultant in India?
From AGL design and equipment selection to photometry, testing, commissioning and maintenance — share your BOQ, technical specification or existing AGL configuration and we will revert with next steps.
AGL Consultancy Services in India
Approach lighting design
Approach lighting design sets the layout, light types, circuits and power for the approach lighting system of a runway. It follows the approach category, the ICAO and DGCA requirements and the airport's operating needs, and it must be coordinated with the runway lighting, CCRs and control system.
AGL technical proposal
An AGL technical proposal sets out the scope, design basis, applicable standards, equipment, testing and commissioning approach for a project. A clear proposal helps the airport compare bids and see how each requirement will be met.
AGL design consultant
An AGL design consultant prepares the lighting design, circuit and electrical design, specifications and drawings, and supports tender evaluation and site supervision. The role links the airport's operational need to equipment that can be installed, tested and maintained.
Airfield lighting project consultant
An airfield lighting project consultant supports an airport from concept to handover: surveys, design review, procurement support, supervision of installation, testing and documentation. The scope depends on whether the work is a new airport, extension or upgrade.
Airport lighting technical support
Airport lighting technical support helps airport teams with fault finding, design queries, retrofit checks, standards questions and documentation. It can be a one-off review or ongoing support during operation.
Sources & References
- Ministry of Civil Aviation — Annual Report 2025
- ICAO Store — Annex 14, Aerodromes
- ICAO Training — Design of Aeronautical Ground Lighting (AGL)
- AAI — Operation and Maintenance of AGL System with ILCMS (CAT-I/II/III) at NSCBI Airport, Kolkata (2026-2028)
- AIM India eAIP archive 06-08-2026 — AD 2.1 VABV
- Airports Authority of India — tender search (AGL photometric field testing tenders)
External sources were referenced when this page was prepared; tender listings, AIP data and regulatory documents change over time. Always confirm requirements against the controlled documents for your project.
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Please read before relying on any content on this page.
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- Safety. Work on series circuits, constant current regulators (CCRs), isolating transformers, cables, connectors and lighting equipment can be fatal. Always apply the aerodrome’s permit-to-work and isolation/LOTO procedures, prove dead, use correctly rated instruments and PPE, and follow the manufacturer’s instructions. Nothing here authorises work on live equipment or the bypassing of any safety device.
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