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#21
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Indeed it would be nice! I'm sure it would be just too much for the
liability guys to swallow at this point. There are 3 or 4 legal disclaimers you required to accept responsibility for every time you turn it on. But what a machine!! Paul Tomblin wrote: the only thing that would make the 396 perfect to me would be if they'd add approach plates. Why? Because once I'm being vectored to the ILS, I don't need the GPS any more for course guidance, just situational awareness, and so it would be nice to switch the display to something I can use. Because it would be nice to see a little "you are here" on the course line. Because those flimsy approach plate books are always tearing and I'm likely to lose the plate I need. Because if I have to divert, it would be nice to hit "GOTO" and then have the approach plate come up rather than hunt through my book. Especially if the diversion is to another state or province. |
#22
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![]() "Peter Duniho" wrote: I have a 195, and it's great. I tried a 295, and it sucks. I hated my 195, loved my 295. That may be why they make both, and keep them different. ![]() They don't make either one anymore. IIRC, they stopped making the 195 soon after they released the 295. -- Dan C172RG at BFM |
#23
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I believe you can now download obstacles on the 196
But not terrain - see the obstacle, change heading, hit the mountain ![]() Plus, when I enquired about how many obstacles it showed in Canada, the response was . . . . . . some. Now that has to be worth buying. Tony -- Tony Roberts PP-ASEL VFR OTT Night Cessna 172H C-GICE |
#24
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Tony,
But not terrain - see the obstacle, change heading, hit the mountain You're telling us you would rely on a handheld, non-certified, non-WAAS VFR-GPS with a systematic altitude error of at least a couple hundred feet to avoid terrain? Terrain on a (handheld) GPS looks really cool and makes it easier to correlate the moving map picture and reality outside the window, but IMHO you just can't use it to avoid terrain by only a few hundred feet as necessary during scud running. For all other situations, I don't really see what it is needed for: VFR you just look outside at the terrain, IFR you should be high enough to not hit the terrain anyway - and the map without terrain should give you enough situational awareness to avoid being where you shouldn't be. That said, terrain is nice to have and adds to SA - but not critical. -- Thomas Borchert (EDDH) |
#25
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In article ,
Thomas Borchert wrote: Terrain on a (handheld) GPS looks really cool and makes it easier to correlate the moving map picture and reality outside the window, but IMHO you just can't use it to avoid terrain by only a few hundred feet as necessary during scud running. For all other situations, I don't really see what it is needed for: VFR you just look outside at the terrain, IFR you should be high enough to not hit the terrain anyway - and the map without terrain should give you enough situational awareness to avoid being where you shouldn't be. That said, terrain is nice to have and adds to SA - but not critical. IFR during the approach to an airport with surrounding terrain seems like a pretty good use of terrain avoidance. VFR during the approach to an airport in the summer when the visibility may be reduced in haze seems like a pretty good use of terrain avoidance. This nonsense that I've been reading here and on other message boards suggesting that a situational awareness tool is useless or almost useless because it isn't "certified" is sheer lunacy, in my opinion. I think it was the AOPA boards where some folks said they would trust an ADF over a portable GPS because the ADF was "certified." No, you shouldn't rely on it to scud run, and you shouldn't be doing approaches with a non-certified GPS, but it is tremendously useful for situational awareness--which includes awareness of obstacles and surrounding terrain. JKG |
#26
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Jonathan,
IFR during the approach to an airport with surrounding terrain seems like a pretty good use of terrain avoidance. VFR during the approach to an airport in the summer when the visibility may be reduced in haze seems like a pretty good use of terrain avoidance. I agree. But in both cases, it is "nice to have", not something you'd bet on. For IFR, if you adhere to the procedure as published, you won't be near the terrain anyway. IN the VFR case, if you really can't see the terrain (and imagine it from the chart), you have no business being there. The scenario mentioned by the poster was "fly away from an indicated obstacle only to fly into non-indicated terrain". That is a scenario that should never happen, with or without GPS. And the terrain-capable GPS, certified or not, is clearly not capable of nor meant to be saving your bacon in that case. This nonsense that I've been reading here and on other message boards suggesting that a situational awareness tool is useless or almost useless because it isn't "certified" is sheer lunacy, in my opinion. I didn't mean to say that. In fact, I agree with you. -- Thomas Borchert (EDDH) |
#27
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In article ,
Thomas Borchert wrote: I agree. But in both cases, it is "nice to have", not something you'd bet on. For IFR, if you adhere to the procedure as published, you won't be near the terrain anyway. IN the VFR case, if you really can't see the terrain (and imagine it from the chart), you have no business being there. Sure, if everyone did everything perfectly every time, and never got lost or disoriented, all of this technology wouldn't be necessary. I agree, it is certainly supplemental, but it can indeed save your bacon if you find yourself disoriented with surrounding terrain. I wouldn't rely on any one instrument or system if I had supplemental information available. The bottom line is that if my GPS alerts me about a tower, I'm going to climb or turn. Same goes for terrain. I think that this functionality is a very nice supplement that can make flying safer, but certainly isn't intended to be a substitute for good pre-flight planning. That being said, unless you fly in mountainous terrain, I wouldn't waste money on the terrain. In my opinion, obstacles are a bigger deal because they seem to be "growing" taller in many areas, and are sometimes difficult to spot. JKG |
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