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Opps, sent a blank message.
Someone may have already pointed this out, if so, sorry for the duplication, Brian, if one is flying a precision instrument approach, like an ILS, that has a glideslope, when one arrives at 'minimums' the runway environement must be is sight if the landing is to be continued. It would not be uncommon for ILS minimum altitude to be 200 feet above ground, so there aren't too many seconds left to decend that last 200 feet. See the runway or fly the missed approach. There are other kinds of approaches, called non precision approaches. These take you you to the vicinity of the airport for circling approaches, or near the approach end of the runway, but do not give altitude information. What happens with these is the airplane passes over a final approach fix, which is some form of radio derived point, and then the approach documentation permits the airplane to decend to a fixed altitude. At that point it will have reached minimiums, but the pilot in general will depend on a clock and airspeed estimates to tell when (s)he should be over the airport. (S)he does NOT have fly the missed approach when the airplane reaches the minimum altitude permitted by the approach, but when the estimated position is close to the airport. Think of a small airport in a flat region near the coast. If the approach is from the water siide it might be reasonable for the airplane to go down to 500 feet two NM from the airport, then continue flying toward it for another minute (if speed over the bottom is120 kts), before flying the miss. Sorry if this is all redundant. While watching a lot of landing videos and whatnot, I hear "minimums" called out as an aircraft approaches its landing field. From what I've been told, "minimums" indicates the decision as to whether or not the field is in sight, correct? so if minimums are not met, go around? Am I right in assuming this? |
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