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#41
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"Richard Kaplan" wrote in message s.com... "Dan Luke" wrote in message ... If you fly much IFR, you need an approach GPS, in my opinion, unless you restrict yourself to ILS equipped airports. I "restrict" myself to airports with ILS, LOC, VOR, NDB, VOR/DME RNAV, SDF, LDA, or ASR approaches. That tends not to be too restrictive at all. The point will very soon be moot though with WAAS GPS precision approaches -- my avionics shop knows I want to be first in line to get such a box installed in my airplane. The CNX-80 is about the limit of the technology; without adding an air data computer and perhaps a radar altimeter. |
#42
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"Tarver Engineering" wrote in message ... The CNX-80 is about the limit of the technology; without adding an air data computer and perhaps a radar altimeter. I plan a Garmin 430 which is much more economical than the CNX-80 but will still be able to fly the precision WAAS approaches when the unit is upgraded later this year. An air data computer and/or radar altimeter would not add any more capability to fly an instrument approach and will not be required for WAAS GPS approaches. -- Richard Kaplan, CFII www.flyimc.com |
#43
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"Richard Kaplan" wrote in message s.com... "Tarver Engineering" wrote in message ... The CNX-80 is about the limit of the technology; without adding an air data computer and perhaps a radar altimeter. I plan a Garmin 430 which is much more economical than the CNX-80 but will still be able to fly the precision WAAS approaches when the unit is upgraded later this year. An air data computer and/or radar altimeter would not add any more capability to fly an instrument approach and will not be required for WAAS GPS approaches. With LAAS dead I see no way for you to get there. Unless you mean to use ILS. |
#44
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"Tarver Engineering" wrote in message ... With LAAS dead I see no way for you to get there. Unless you mean to use ILS. Garmin has clearly announced that the GNS 430/GPS 400, GNS530/GPS500, and CNX-80 will all be upgradable to WAAS GPS precision approaches before the end of the year. The CNX-80 upgrade will probably be free and software-only, whereas the 400/430/500/530 upgrade will cost $1,500 for a hardware upgrade. Do you have reason to not believe this is so? If the above does not occur, there will be an awful lot of surprised, disappointed, and/or angry pilots at the end of this year. -- Richard Kaplan, CFII www.flyimc.com |
#45
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"Richard Kaplan" wrote in message s.com... "Tarver Engineering" wrote in message ... With LAAS dead I see no way for you to get there. Unless you mean to use ILS. Garmin has clearly announced that the GNS 430/GPS 400, GNS530/GPS500, and CNX-80 will all be upgradable to WAAS GPS precision approaches before the end of the year. The CNX-80 upgrade will probably be free and software-only, whereas the 400/430/500/530 upgrade will cost $1,500 for a hardware upgrade. Do you have reason to not believe this is so? If the above does not occur, there will be an awful lot of surprised, disappointed, and/or angry pilots at the end of this year. I expect they will be disapointed if they are expecting anything better than the VNAV capabilities listed for the CNX-80. Note that LAAS is defunded and therefore WAAS will not be getting to CAT III. http://www.garmin.com/support/faqs/faq.jsp?faq=221 |
#46
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"Tarver Engineering" wrote in message ... I expect they will be disapointed if they are expecting anything better than the VNAV capabilities listed for the CNX-80. Note that LAAS is defunded and therefore WAAS will not be getting to CAT III. Who is suggesting flying a Cat III approach in a piston single-engine airplane? All I am saying is that I fully expect the Garmin 400/500 series and the CNX-80 to be capable of flying RNAV approaches to VNAV/LNAV minimums and to fly LPV approaches as well by the end of the year. Do you not agree this should be possible by the end of the year? Do you not agree this will be an improvement over current GPS capabilities? -------------------- Richard Kaplan, CFII www.flyimc.com |
#47
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"Richard Kaplan" wrote in message s.com... "Tarver Engineering" wrote in message ... I expect they will be disapointed if they are expecting anything better than the VNAV capabilities listed for the CNX-80. Note that LAAS is defunded and therefore WAAS will not be getting to CAT III. Who is suggesting flying a Cat III approach in a piston single-engine airplane? All I am saying is that I fully expect the Garmin 400/500 series and the CNX-80 to be capable of flying RNAV approaches to VNAV/LNAV minimums and to fly LPV approaches as well by the end of the year. Do you not agree this should be possible by the end of the year? That will depend on the airport, but perhaps FAA can speed that process up. Do you not agree this will be an improvement over current GPS capabilities? I would not credit WAAS with much of it. The 5 sample GPS engine and the pressure altitude data are much more important to the VNAV. Getting from 7.2 meters to 3.6 meters longitudinal accuracy does not give a lot of extra capability. Adding the pressure altitude gets us the abreviated TAWS data base to pump the probabilities. The CNX-80 is a response to the desire for a GPS VNAV by rai posters. I do not blame Garmin for buying UPSAT and porting the technology and I believe more pilot information is safer, as some are going anyway. |
#48
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"Tarver Engineering" wrote in message
... I would not credit WAAS with much of it. The 5 sample GPS engine and the pressure altitude data are much more important to the VNAV. Getting from 7.2 meters to 3.6 meters longitudinal accuracy does not give a lot of extra Look, a Gulfstream G-IV with autoland would be nicer (and safer) too but that is not in the cards for most pilots, me included. From a practical perspective, the bottom line is that right now there is no avionics setup economically practical today for a single-engine piston airplane which can fly an RNAV LNAV/VNAV approach or a WAAS GPS LPV approach. However, toward the end of the year the Garmin CNX-80 and Garmin 400/500 series will be capable of flying these approaches. Correct? -------------------- Richard Kaplan, CFII www.flyimc.com |
#49
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"Richard Kaplan" wrote in message s.com... "Tarver Engineering" wrote in message ... I would not credit WAAS with much of it. The 5 sample GPS engine and the pressure altitude data are much more important to the VNAV. Getting from 7.2 meters to 3.6 meters longitudinal accuracy does not give a lot of extra Look, a Gulfstream G-IV with autoland would be nicer (and safer) too but that is not in the cards for most pilots, me included. From a practical perspective, the bottom line is that right now there is no avionics setup economically practical today for a single-engine piston airplane which can fly an RNAV LNAV/VNAV approach or a WAAS GPS LPV approach. However, toward the end of the year the Garmin CNX-80 and Garmin 400/500 series will be capable of flying these approaches. Correct? Agreed. |
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