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Understanding Runway Visual Range Calculation Process

Learn about the formula for calculating RVR, insight into different visual segments, and its significance for pilots during approach and landing. This guide simplifies the complexities of RVR determination.

tyler-hopkins
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Understanding Runway Visual Range Calculation Process

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  1. The formula: RVR = HAT/tg x - L RVR is the resultant of the formula, namely X + Y, because HAT/tgx = X + Y + L Hence RVR = X + Y, not only Y. Hence X is an additional Visual segment, apart from the difference of the ICAO maximum approach light length and the e.g. 720 m. The pilot can see over a distance X + Y. RVR = X + Y HAT Total Visual segment 15 m Y L = 720 m X (HAT-15)/tg x HAT/tg x

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