Yesterday I was spotting at Barcelona International (LEBL). I noticed that at least two airliners were approaching with their landing lights OFF, just to light them on very short final (about 0.4NM from runway threshold).
I thought landing lights were required to be ON at all times below 10000 feet. Am I wrong? Is there any situation when landing lights are not required below 10000 feet?
Visibility was excellent,
I'm going to see if I can find the actual METARs but I would say CAVOK conditions. see the METARs:
LEBL 161630Z 17007KT 140V210 CAVOK 19/11 Q1019 NOSIG LEBL 161700Z 20007KT 150V230 CAVOK 19/11 Q1019 NOSIG LEBL 161730Z 22007KT 170V240 CAVOK 19/12 Q1019 NOSIG LEBL 161800Z 21007KT CAVOK 18/12 Q1019 NOSIG LEBL 161830Z 20005KT 170V230 CAVOK 18/12 Q1020 NOSIG LEBL 161900Z 21005KT CAVOK 17/12 Q1020 NOSIG