Hello. I live inside the traffic pattern of McCarren airport in Las Vegas, Nv. My question, is one of curiosity...Commercial heavy aircraft, after takeoff, while they are still in the pattern, I have noticed at night (of course) that a bright white light, seems to be aimed back at the tower. It's not a landing light, but seems to emanate from the side of some aircraft. Also, the light will turn on and off sometimes as much as five times. I'm a private pilot, and have noticed this activity frequently as planes fly off over my house. Is it some sort of communication? Does this light come on when the pilot keys his microphone? I hope someone has an answer, this is bugg'n me big time!
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