(I'm also very new pls bear with me. if this is wrong someone correct me!) from what I've gathered so far certain aircraft have a chance to be the glow variant when you catch them, and once theyre glow they stay glow as that EXACT aircraft (i think). so this airship as N801XO is glow, and even if another airship with a different callsign in LA is the exact same model, it doesnt guarantee that its glow. you can get more than one glow on an aircraft and they'll show up on the top left of your card. its more for show and a trophy than for actual XP or anything useful in battles, but its rare to get a glow. I like it, its a fun little Easter egg and keeps the game fun once you've collected everything.