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Choosing Runway Threshold, Wing Bar and End Lights

Compare runway light positions, signals and installation requirements.

Choosing Runway Threshold, Wing Bar and End Lights

Start with the lighting layout. Confirm what each position needs to mark and which direction the signal must face. Airsafe’s 12-inch inset LED range includes separate models for each of these functions.

Light

Position and signal

Airsafe example

Runway threshold light

Sits along the landing threshold and shows green toward the approach, marking where the runway becomes available for landing.

THRZ-12-LED

Runway threshold wing bar light

Shows green toward the approach from either side of the threshold, making it easier to identify.

THWZ-12-LED

Runway end light

Sits near the runway end and shows red toward the runway, marking where it terminates.

ENDZ-12-LED

When the landing threshold is at the runway end and the approved design allows both functions at the same position, a bidirectional fixture can show green toward the approach and red toward the runway. For a displaced threshold, mark the landing threshold and the runway end separately on the drawing. Use the runway category and applicable standard to determine the threshold and wing bar lighting layout. Combined TAEZ-12-LED fixture · EASA runway lighting specifications · FAA visual aids design guidance

For a quotation, send the runway category, lighting layout, applicable standard and revision, and whether the fixtures will be elevated or inset. For replacements, include the existing fixture nameplate, base drawing, constant current regulator (CCR), isolation transformer and monitoring details so the supplier can check mounting, dimming and fault reporting. Contact Airsafe’s engineering team

Frequently asked questions

How do threshold, wing bar and end lights differ?

Threshold and wing bar lights show green toward the approach; runway end lights show red toward the runway. The green lights identify the landing threshold, and the red lights mark the runway end.

When can threshold and end lights share one fixture?

Where the landing threshold is at the runway end and the approved design permits, one fixture can show green toward the approach and red toward the runway. Airsafe's example is TAEZ-12-LED.

How are lights arranged at a displaced threshold?

The displaced threshold and the runway end are separate positions, so one fixture cannot serve both. Where a threshold row is required, it sits at the displaced threshold. Some non-instrument or non-precision approach runways may use wing bars instead, as permitted by the applicable standard.

What is needed for a quotation or replacement?

Send the runway category, lighting layout, applicable standard and revision, and mounting requirements. For replacements, add the existing fixture nameplate, base drawing, CCR, isolation transformer and monitoring details.

References: ICAO Annex 14, Volume I, sections 5.3.10–5.3.11; MH 5001-2021, clauses 7.4.2–7.4.4.

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