For the CAP Advisory with published visibility '1 RVR 50', what is the minimum ground visibility and RVR/Rwy Vis in feet needed to fly the approach legally?

For the CAP Advisory with published visibility '1 RVR 50', what is the minimum ground visibility and RVR/Rwy Vis in feet needed to fly the approach legally?

• A. 3/4, RVR 4000
• B. 1/2, RVR 2500
• C. 5/8, RVR 3000
• D. 1, RVR 5000

Answer: (A)

The key idea is how to read CAP approach minima when weather is given in two parts: ground visibility and runway RVR. For this CAP Advisory, the required minimums to fly the approach legally are a ground visibility of 0.75 mile and an RVR of 4,000 feet. These are the smallest values that still meet the advisory’s constraints. An RVR of 4,000 feet is roughly compatible with a 0.75 mile ground visibility, and together they represent the minimum weather you must have to legally execute the approach under this advisory. The published “1 RVR 50” indicates the way the minima are presented, but the actual minimum pair you must meet in practice is 0.75 mile and 4,000 feet.

The key idea is how to read CAP approach minima when weather is given in two parts: ground visibility and runway RVR. For this CAP Advisory, the required minimums to fly the approach legally are a ground visibility of 0.75 mile and an RVR of 4,000 feet. These are the smallest values that still meet the advisory’s constraints.

An RVR of 4,000 feet is roughly compatible with a 0.75 mile ground visibility, and together they represent the minimum weather you must have to legally execute the approach under this advisory. The published “1 RVR 50” indicates the way the minima are presented, but the actual minimum pair you must meet in practice is 0.75 mile and 4,000 feet.