low visitbility take off
what the WX requirements for a low visibility take off?
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When RVR is 400m, or below, an take-off is considered low visibility. With applicable procedures, like captain is PF, ref thrust etc etc.
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IT also depends on your company minima, aircraft type, and if a take off alternate is available within the specified distance.
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RVR 150m, center line lights, departure alternate.
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Can be as low as 125m
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¡ Hola Che !
xxx AR - all types of aircraft - 400m RVR... Alternate with at least alternate minimums within 1 hour cruise (eng-out) for twins - Alternate within 2 hours cruise (eng-out) for 4 engine aircraft - 727 (3 eng) was same - xxx :) Happy contrails |
Alternate within 2 hours cruise (eng-out) for 4 engine aircraft - 727 (3 eng) was same - xxx |
1. Does your airline have low visibility operational approval?
2. Does the airport have low visibility procedures published in the AIP? 3. Does ATC have low visibility procedures approved? Any general limit will be subject to local/national rules overriding it if these are more strict. Which visibility are you going to consider, Met Observed, RVR or IRVR? Where are the measuring points? What are the runway markings? What are the runway lighting provisions (location and intensity)? Do you have localiser guidance? Once you have all of that information for the specific runway and set of operational procedures you will be using, then you can calculate the limits. The airport may be in low visibility mode, but you may not! |
You are also forgetting that this differs depending on where you are in the world. USA differs from JAR, for example.
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