When should photoluminescent strips be charged preflight?

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Photoluminescent strips need light energy to glow in the dark. They get this energy from the cabin lighting, so they must be exposed to a bright enough light source for a period of time before the flight to reach full brightness. Waiting until boarding or just a few minutes before departure may not give them enough time to charge properly, and charging upon arrival doesn’t help for the current flight’s preflight safety needs. The 30-minute prior-to-departure window provides sufficient time for a complete charge while you complete preflight checks and prepare the cabin, ensuring the strips are ready to illuminate the exit path in case of an evacuation or power loss.