Controlled procedures for taxiway edge and centreline lighting, curved and rapid-exit/high-speed taxiways, junction lighting, lead-on/lead-off systems, stop bars, runway guard lights, and the replacement, cleaning, optical, electrical, mechanical and operational verification of taxiway AGL fixtures and circuits.
Technical Control — Exact taxiway lighting type, spacing, colors, locations, aiming, circuit configuration, stop-bar logic, interlocking, intensity settings and operational requirements shall be taken from the approved aerodrome lighting drawings, applicable ICAO/FAA/DGCA requirements, ALCMS/SMGCS philosophy where applicable, manufacturer's instructions and project specification.
To ensure taxiway edge lights are installed at approved locations and provide continuous visual guidance along the taxiway.
Verify:
The fixture shall be:
Important — Where a manufacturer provides a specific aiming/reference method, it shall be followed rather than relying solely on visual alignment.
To ensure taxiway edge lights are correctly aligned with the approved taxiway geometry.
Critical Requirement — The installed fixture shall not create an unacceptable pavement obstruction or operational hazard.
To establish a controlled procedure for installation of inset taxiway centreline lights.
To ensure taxiway centreline fixtures remain correctly aligned with the taxiway centreline.
Critical Check — The junction lighting arrangement shall not create visual ambiguity regarding the intended taxi route.
To ensure lighting at taxiway intersections provides clear and unambiguous guidance.
Important — Curve lighting should be checked as a continuous guidance system, not as isolated individual fixtures.
To ensure lighting follows curved taxiway geometry and provides continuous visual guidance.
Critical Interface — Special attention shall be given to the transition between runway lighting and rapid-exit taxiway guidance.
To ensure rapid-exit taxiway lighting is installed and maintained according to the approved aerodrome lighting design.
To establish inspection and maintenance requirements for lighting systems serving high-speed taxiway routes.
To ensure lead-on lighting provides clear guidance from the taxiway/runway interface toward the intended route.
To ensure lead-off lighting provides correct guidance from the runway toward the taxiway route where installed.
Critical Requirement — Stop-bar operation shall be verified as part of the complete control/interlocking system, not only as individual lamp operation.
To establish a controlled procedure for installing stop-bar lighting systems.
Verify:
To ensure stop-bar fixtures are correctly positioned and aligned across the designated taxiway.
Critical Check — Runway guard lights shall be evaluated together with the associated runway-entry warning arrangement.
To ensure runway guard lights are installed at the approved runway/taxiway interface.
To safely replace defective taxiway lighting fixtures.
To maintain optical performance of taxiway lighting fixtures.
To verify that taxiway fixtures maintain the required optical condition.
Check:
To verify the electrical integrity of taxiway lighting systems.
Check:
To verify mechanical integrity of taxiway lighting fixtures and mounting systems.
To verify correct operation of the taxiway lighting system following installation, maintenance or repair.
Confirm:
Master workflow, special interface checks, hold points, common failure modes and the master checklist that apply across all 19 Division 09 procedures.
The recommended workflow is:
Taxiway Junction
Rapid Exit Taxiway
Stop Bar
Runway Guard Lights
"Taxiway lighting must be treated as a complete guidance and control system — not as a collection of individual lamps. Location, spacing, alignment, color, optical performance, electrical integrity, stop-bar/guard-light operation and control-system response must work together to provide unambiguous aircraft guidance."
Each airport should adapt these SOPs to its own approved aerodrome lighting drawings, applicable ICAO/FAA/DGCA requirements, ALCMS/SMGCS philosophy, manufacturer's instructions and project specification.
Approved drawings and the applicable control/interlocking philosophy shall take precedence wherever they impose more restrictive or more specific requirements than these SOPs.
Technical references behind the procedures in this division:
References are given at document or chapter level for technical orientation. Confirm the current edition, amendments and national adoption (for example DGCA CAR Section 4, FAA Advisory Circulars or EASA material) for each project. Approved project specifications, manufacturer instructions and the airport's own procedures take precedence, as stated in the precedence note above.
Short answers on the taxiway lighting checklist and taxiway light replacement, taken from Division 09. Confirm all criteria against the approved layout and the current standard.
The taxiway lighting checklist in this division is the Master Taxiway Lighting Checklist. It runs from layout and identification (approved layout, designation, fixture type and location, circuit), through installation (base/can, transformer, secondary cable, connector, height, alignment, torque), to condition (optical surface, prism or lens, colour, electrical and mechanical condition, frangible arrangement). It then covers the special interfaces: junction, curve, rapid-exit, lead-on, lead-off, stop-bar and runway guard lights, and ALCMS interface where applicable. It closes with FOD inspection, operational test, photometric verification where required, defect closure, documentation and system release.
Taxiway light replacement follows SOP-198. Obtain work authorization and coordinate with Airport Operations/ATC as required. Identify the defective fixture, isolate the circuit, apply LOTO where applicable and verify a safe condition. Then remove the connector and the defective fixture, inspect the base/can and transformer, and install the approved replacement. Connect the secondary lead, verify alignment, apply the specified torque and inspect the optical surfaces. Finish with operational verification and the work-clearance procedure.
Quick answers about Taxiway Lighting SOPs in the AGL SOP Library.
Division 09 is a set of 19 procedures (SOP-185 to SOP-203, Rev 0) for taxiway edge and centreline lighting, curved and rapid-exit or high-speed taxiways, junction lighting, lead-on and lead-off systems, stop bars and runway guard lights. It also covers replacement, cleaning, and optical, electrical, mechanical and operational verification.
From the approved aerodrome lighting drawings, applicable ICAO, FAA and DGCA requirements, ALCMS/SMGCS philosophy where applicable, manufacturer's instructions and the project specification. This covers type, spacing, colors, locations, aiming, circuit configuration, stop-bar logic, interlocking and intensity settings.
Stop-bar operation is verified as part of the complete control and interlocking system, not only as individual lamp operation (SOP-195). Checks include correct location, spacing and alignment, correct red indication where applicable, correct control response and interlock, and correct restoration after test.
Runway guard lights are evaluated together with the associated runway-entry warning arrangement (SOP-197). The procedure verifies approved location, fixture type, mounting, orientation, elevation, electrical connection, control interface and operational performance.
The transition between runway lighting and rapid-exit taxiway guidance needs special attention (SOP-191). Verify the centreline and edge-light arrangement, fixture sequence, optical orientation, inset fixtures, connections and control response.
Correct guidance path, no visual ambiguity, correct centreline and edge lighting, a correct stop-bar arrangement and correct control logic.
Approved design, taxiway or intersection survey, fixture location and base/can verification, transformer and secondary cable verification, installation, then height, alignment, connector and torque verification. Then optical, electrical and mechanical inspection, FOD inspection, controlled energization, operational and control/interlock verification, photometric verification where required, and final release with documentation.
Work permit and ATC/Operations coordination are complete where required, the area, personnel and tools are clear, FOD inspection is done and stop-bar and guard-light interfaces are considered. After permission to energize, the team observes the complete lighting section for correct ON/OFF condition, color, intensity and optical direction (SOP-203).
The Master Taxiway Lighting Checklist covers layout and identification, installation (base/can, transformer, cable, connector, height, alignment, torque), optical, electrical and mechanical condition, the special interfaces (junction, curve, rapid-exit, lead-on, lead-off, stop-bar, runway guard lights, ALCMS), FOD inspection, operational test, photometric verification where required, documentation and system release.
Taxiway light replacement (SOP-198) starts with work authorization, ATC coordination as required, circuit isolation, LOTO where applicable and a safe-condition check. The defective fixture is removed, the base/can and transformer are inspected, the approved replacement is installed and connected, then alignment, torque and optical surfaces are verified, followed by operational verification and work clearance.
Knowing the maintenance procedure is essential. Understanding how taxiway lighting fixtures, circuits and control systems work together takes deeper technical knowledge.
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