What if RVR is less than visibility?

If visibility is less than the lowest reportable RVR value, an M is placed in front of it. Here, M0600 indicates the RVR for runway 18R is less than 600 feet. And if the visibility is greater than the highest reportable value, a P is placed in front of it.



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Reportable values are RVR 6,000 feet or less. When it is determined from a reliable source that the indicated RVR value differs by more than 400 feet from the actual conditions within the area of the transmissometer, the RVR data is not acceptable and must not be reported.

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Single pilot operations An RVR of less than 800 m is not permitted except when using a suitable autopilot coupled to an ILS or MLS, in which case normal minima apply. The Decision Height applied must not be less than 1,25 x the minimum use height for the autopilot.

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for single-pilot operations, the minimum RVR is 800 m or the minima in Table 6.1. H, whichever is higher. the DH applied should not be less than 1.25 times the minimum use height for the autopilot.

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The 1 in 60 rule is a simplified way to calculate an aircraft's drift angle in flight. If an aircraft has drifted 1 nm. off track after 60 nm's, its drift angle is 1°.

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In general for the ILS, the glideslope intercept will be at the approximate position of the outer marker or 4-7 miles from the threshold.

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