Flying in on a ILS aligned to 19, would take you to directly over the WhiteHouse, so they have a Offset ILS (LDA) of 149 degrees to avoid that (and instead have you fly over the Pentagon instead … go figure) Or the White House in the case of the LDA 19 into KIAD. If it’s a twin or maybe a TAA (Technologically advanced aircraft like a Cirrus) you may opt to just engage in a NAV hold and vertical speed mode descent until minimums. In a small GA aircraft you’d pretty much fly all by hand. ![]() ![]() Divide by 2 and you get 50 (add a zero) for -500 fpm.Īnyway, assuming you break out of clouds, or see approach lights/runway before minimums, you could at that point, align yourself with the runway heading and continue to a normal landing. Example you fly the approach at 100 knots. You can use a rule of thumb and divide your groundspeed by 2 to get a descent rate. The chart tells you the glide path is 2.92 degrees so almost a standard glide path (3 is standard). You determine your needed descent rate after crossing PTATO. There is no vertical guidance on this approach. You’ll fly down to minimums (listed at bottom 1840-1 = 1840 ft MSL and 1 mile visibility required) until you see the airport environment (approach lights, runway lights, REILS etc) and then align yourself with the runway.
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