EASA SIB 2019-04: Avoiding Obstacles Lighted with Light-Emitting Diode Obstacle Lights whilst Operating with Night Vision Goggles

What to do

Air operators should update pilot NVG training to include information on LED obstacle light limitations and implement procedures requiring periodic unaided visual scans during low altitude and landing reconnaissance flights. Pilots should be trained to identify and communicate LED-lit obstacles and abort landings or climb if obstacle locations are unclear. Operators and pilots are encouraged to report any encounters with non-visible LED obstacles to their competent authorities, who should consider these recommendations in safety oversight.

Summary

EASA Safety Information Bulletin 2019-04 is an informational document addressing the visibility issues of LED obstacle lights when using Night Vision Goggles (NVGs) during helicopter operations. It highlights that certain red LED obstacle lights are not visible through NVGs due to their emission spectrum, which differs from traditional incandescent lights. This bulletin is relevant to air operators and competent authorities involved in night operations with NVGs.

What changed

EASA SIB 2019-04 introduces awareness about the limitations of LED obstacle lighting visibility through NVGs and provides guidance on mitigating associated safety risks. It does not impose mandatory operational directives but recommends procedural adaptations and reporting practices to enhance safety during night operations involving LED-lit obstacles.

Why it matters

This bulletin matters because LED obstacle lights, increasingly used for their longevity and efficiency, may not be detected by NVGs, potentially increasing collision risks during night flights. Aviation professionals must understand these limitations to maintain situational awareness and ensure safe operations near obstacles. Incorporating this knowledge into training and operational procedures helps prevent accidents and supports regulatory compliance.