Indeed, landing lights OFF above 250 kts is unusual. Although you usually don’t fly faster than 250 kts below 10.000 ft anyway. The Boeing 737 (pre-max) has inboard and outboard landing lights, the outboard ones are retractable lights and have a speed limit. The inboard landing lights are kept on below 10.000 ft. Not sure how it is on other aircraft but landing lights ON below 10.000 ft is industry standard. Turn off lights we only use in the dark or bad weather at poorly lit airports to have the area to the sides illuminated to find taxiway for vacating, otherwise OFF.
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