Results for "Brown"
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...ectors. Each sector has one or two radio frequencies written on it. One will be in green type and the other will be brown. In other words the green is the area frequency and the brown is E class airspace. In the a...- ...ectors. Each sector has one or two radio frequencies written on it. One will be in green type and the other will be brown. In other words the green is the area frequency and the brown is E class airspace. In the a...