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#11
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Garmin 530 trip
John R. Copeland wrote:
"Sam Spade" wrote in message news:xSljg.178884$bm6.144152@fed1read04... Dave Butler wrote: r Only TSO146 navigators have altitude outputs that have any legal meaning. And, only for final approach segments that have LPV minimums, not unlike ILS. Not so, that part about "only...LPV minimums". You probably meant LNAV/VNAV minimums, didn't you? No, Mr. Butler stated that TSO146 navigators have altitude outputs that have any legal meaning, and I added that is true, but only for the final approach segment of an IAP that has LPV minimums. LNAV/VNAV minimums are valid only for birds with IFR-certified Baro VNAV equipment. Let me add, for clarification, that Baro VNAV is valid as the primary means of vertical navigation only for the final approach segment of an RNAV (GPS) IAP that has an LNAV/VNAV line of minimums. |
#12
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Garmin 530 trip
"Sam Spade" wrote in message news:7xojg.178892$bm6.131959@fed1read04...
John R. Copeland wrote: "Sam Spade" wrote in message news:xSljg.178884$bm6.144152@fed1read04... Dave Butler wrote: r Only TSO146 navigators have altitude outputs that have any legal meaning. And, only for final approach segments that have LPV minimums, not unlike ILS. Not so, that part about "only...LPV minimums". You probably meant LNAV/VNAV minimums, didn't you? No, Mr. Butler stated that TSO146 navigators have altitude outputs that have any legal meaning, and I added that is true, but only for the final approach segment of an IAP that has LPV minimums. LNAV/VNAV minimums are valid only for birds with IFR-certified Baro VNAV equipment. Let me add, for clarification, that Baro VNAV is valid as the primary means of vertical navigation only for the final approach segment of an RNAV (GPS) IAP that has an LNAV/VNAV line of minimums. TSO-C146 vertical guidance in either LPV or LNAV/VNAV approaches does not depend upon barometric settings. The minimums, though, are based upon barometric altitudes, of course. Is the latter what you meant to emphasize? |
#13
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Garmin 530 trip
John R. Copeland wrote:
"Sam Spade" wrote in message news:7xojg.178892$bm6.131959@fed1read04... John R. Copeland wrote: "Sam Spade" wrote in message news:xSljg.178884$bm6.144152@fed1read04... Dave Butler wrote: r Only TSO146 navigators have altitude outputs that have any legal meaning. And, only for final approach segments that have LPV minimums, not unlike ILS. Not so, that part about "only...LPV minimums". You probably meant LNAV/VNAV minimums, didn't you? No, Mr. Butler stated that TSO146 navigators have altitude outputs that have any legal meaning, and I added that is true, but only for the final approach segment of an IAP that has LPV minimums. LNAV/VNAV minimums are valid only for birds with IFR-certified Baro VNAV equipment. Let me add, for clarification, that Baro VNAV is valid as the primary means of vertical navigation only for the final approach segment of an RNAV (GPS) IAP that has an LNAV/VNAV line of minimums. TSO-C146 vertical guidance in either LPV or LNAV/VNAV approaches does not depend upon barometric settings. The minimums, though, are based upon barometric altitudes, of course. Is the latter what you meant to emphasize? What I meant to emphasize is that neither LPV nor Baro VNAV are primary for vertical nav in any phase of IFR flight, except from the precision FAF to the DA point in an IAP that supports either LPV or Baro VNAV as primary for the final segment. |
#14
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Garmin 530 trip
That's why I find very annoying about Garmin, you still need to carry a
full set of charts. The 530 only gives you references to fixes, not altitudes. Also, if you get assigned an airway inroute, be ready to grab that old enroute chart, Garmin doesn't believe in airways. This is still true in the G1000. -Robert Al wrote: I recently got intoduced to the Garmin 530. Nice box, advertises 3D nav, but I couldn't find any referance to step down altitudes on the approach. Is this not available? I find it hard to believe that they would store every fix and route in the Western Hemishpere, and leave out a vital portion of every approach. Do Garmin users all have Jepp subscriptions, and carry them for the step down fixes? Al G |
#15
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Garmin 530 trip
Robert M. Gary wrote:
... Garmin doesn't believe in airways. This is still true in the G1000. you knew this was coming The GNS480 has airways. |
#16
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Garmin 530 trip
Robert M. Gary wrote:
That's why I find very annoying about Garmin, you still need to carry a full set of charts. The 530 only gives you references to fixes, not altitudes. Also, if you get assigned an airway inroute, be ready to grab that old enroute chart, Garmin doesn't believe in airways. This is still true in the G1000. There is no navigator out there today that eliminates the need for charts. |
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