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"The rule is perfect as currently written. The intent behind it is to make clear that a pilot should initiate contact ATC if in their airspace and to prevent them knowingly sailing through without contacting anyone. In other words, the onus is on the pilot to make reasonable efforts to check. \n  \nMy point is that knowing exactly which sector you're in and how they are split isn't always possible, so if a controller sees a pilot enter their sector without contact they would do well to send a contact me instead of hiding behind this rule. \n  \nIn other words, it takes two to tango. \n"
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