Pro377 Posted November 30, 2015 Share Posted November 30, 2015 Hi, A newbie question..... I don't understand how to get the correct information to set up the minimums on the EFIS panel with Radio or Barometric. It is the turning knob in the upper left corner of the captains EFIS panel Usually between 50 and 200 but I don't understand what it means and where to obtain the correct value Link to comment Share on other sites More sharing options...
pschlute Posted November 30, 2015 Share Posted November 30, 2015 The minimums will depend on whether the approach is : 1. an autoland CAT II/CAT III Where the minimum (decision height) will be usually between 0-100 Radio altitude (height above terrain). 2. A manual landing such as ILS CAT I or LOC or VOR or NDB or a visual, where the minimums will be dependent on the runway and the specific approach, and will be basis Decision Altitude (Altitude above sea level) You will need to look at airport charts to find the exact answer, but most ILS tend to be the equivalent of 200 feet above airport elevation with height increasing as you get to the visual approaches. Note the difference between Radio Altitude and Barometer Altitude minimums. The former is actual height above the terrain you are flying over, the latter is height above sea level. Link to comment Share on other sites More sharing options...
evm Posted November 30, 2015 Share Posted November 30, 2015 Hi, A newbie question..... I don't understand how to get the correct information to set up the minimums on the EFIS panel with Radio or Barometric. It is the turning knob in the upper left corner of the captains EFIS panel Usually between 50 and 200 but I don't understand what it means and where to obtain the correct value The minimums and/or decision altitude is the point where you are required to make a decision if you are going to land or not. The values are printed on the airport charts and are different for weather conditions (CAT...) at each airfield. Once upon a time it was a requirement that you had to be able to see the runway when getting to this point. If it was fogged in or otherwise invisible to you, you had to break off the approach. But it is more than that AFAIK, the "picture" out of your cockpit window has to be "right" at this point. Too far left or right, too much bank, too much crosswind, too fast - decide now or else go around. Link to comment Share on other sites More sharing options...
PhantomTweak Posted December 1, 2015 Share Posted December 1, 2015 As a general rule, it's better by far to go around than try to salvage a trashed approach and landing. That's how people get killed. During go around you can decide to divert to an alternate airport, circle in hopes of better weather, or just take a couple holding orbits to settle down, and THEN try it again. It gives you a lot more options than "uh-oh, this doesn't look goooo......" :D Pat☺ [sIGPIC][/sIGPIC] Had a thought...then there was the smell of something burning, and sparks, and then a big fire, and then the lights went out! I guess I better not do that again! Sgt, USMC, 10 years proud service, Inactive reserve now :D Link to comment Share on other sites More sharing options...
Pro377 Posted December 1, 2015 Author Share Posted December 1, 2015 The minimums will depend on whether the approach is : 1. an autoland CAT II/CAT III Where the minimum (decision height) will be usually between 0-100 Radio altitude (height above terrain). 2. A manual landing such as ILS CAT I or LOC or VOR or NDB or a visual, where the minimums will be dependent on the runway and the specific approach, and will be basis Decision Altitude (Altitude above sea level) You will need to look at airport charts to find the exact answer, but most ILS tend to be the equivalent of 200 feet above airport elevation with height increasing as you get to the visual approaches. Note the difference between Radio Altitude and Barometer Altitude minimums. The former is actual height above the terrain you are flying over, the latter is height above sea level. Thanks! Is it clearly stated which value is for what category in the charts then? Link to comment Share on other sites More sharing options...
PhantomTweak Posted December 1, 2015 Share Posted December 1, 2015 No, but they are listed in the FAR's. HOWEVER: If there are special minimums that apply to an airport, or geographical area, they will be published in a seperate PDF. There will be things like: Standard alternate minimums for non-precision approaches and approaches with vertical guidance [NDB, VOR, LOC, TACAN, LDA, SDF, VOR/DME, ASR, RNAV (GPS) or RNAV (RNP)] are 800-2. Standard alternate minimums for precision approaches (ILS, PAR, or GLS) are 600-2. AND BEND, OR BEND MUNI (BDN) ........ RNAV (GPS) Y Rwy 16 VOR/DME Rwy 16 Category D, 1200-3. NA when local weather not available. Those will be published on the airport's information page, like on AirNav for example, along with the various approaches, like ILS RWY 12, just as an example. Look on this page :http://www.ecfr.gov/cgi-bin/text-idx?rgn=div5&node=14:2.0.1.3.10 And in Parts 91.151 and below on it are the normal minimums, published by the FAA. Does this help at all? Pat☺ [sIGPIC][/sIGPIC] Had a thought...then there was the smell of something burning, and sparks, and then a big fire, and then the lights went out! I guess I better not do that again! Sgt, USMC, 10 years proud service, Inactive reserve now :D Link to comment Share on other sites More sharing options...
pschlute Posted December 1, 2015 Share Posted December 1, 2015 Thanks! Is it clearly stated which value is for what category in the charts then? Yes. So for RWY 09L for London Heathrow the chart tells me: CAT IIIb "ccompany" (this means it depends on the airline procedures but will be between 0-50 CAT II 100 RA CATI ILS 280 BARO LOC 470 BARO Circling 850 BARO Link to comment Share on other sites More sharing options...
Pro377 Posted December 2, 2015 Author Share Posted December 2, 2015 No, but they are listed in the FAR's. HOWEVER: If there are special minimums that apply to an airport, or geographical area, they will be published in a seperate PDF. There will be things like: AND Those will be published on the airport's information page, like on AirNav for example, along with the various approaches, like ILS RWY 12, just as an example. Look on this page :http://www.ecfr.gov/cgi-bin/text-idx?rgn=div5&node=14:2.0.1.3.10 And in Parts 91.151 and below on it are the normal minimums, published by the FAA. Does this help at all? Pat☺ Yes this is helpful for me to understand how this works :) Yes. So for RWY 09L for London Heathrow the chart tells me: CAT IIIb "ccompany" (this means it depends on the airline procedures but will be between 0-50 CAT II 100 RA CATI ILS 280 BARO LOC 470 BARO Circling 850 BARO Thanks for the information! Link to comment Share on other sites More sharing options...
steam345 Posted February 23, 2016 Share Posted February 23, 2016 hi where on this ils chart can i find the minimums? https://www.ippc.no/norway_aip/current/aip/ad/ensb/EN_AD_2_ENSB_5-1_en.pdf Link to comment Share on other sites More sharing options...
scottb613 Posted February 23, 2016 Share Posted February 23, 2016 Hi... They are the values in the bottom left - under the A B C D (class of aircraft)... They list for both a straight in approach or a circle to land approach... The high surrounding terrain makes for some unusually high values for the circle to land... Category A: Speed 90 knots or less. Category B: Between 91 and 120 knots. Category C: Between 121 and 140 knots. Category D: Between 141 knots and 165 knots. Category E: Speed 166 knots or more. Regards, Scott Sent from my iPad using Tapatalk Link to comment Share on other sites More sharing options...
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