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#111
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On Jul 26, 11:14 am, B A R R Y wrote:
Robert M. Gary wrote: See, it even fooled you. You cannot go to 680 until after CULVE but I can see how it mislead you. Can I have cheese on that crow? Hey, its not just you. I was questioning it myself after Karl's posts. I guess the thing to take away from this to me is that the plan view does not necessarily present the MDA. The MDA (presented in teh box below) *only* applies after the FAF and that the plan view may not show that. Luckily I knew that when I flew it in IMC last weekend ![]() -Robert |
#112
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On Thu, 26 Jul 2007 11:27:01 -0700, Hamish Reid
wrote: I dunno -- this has been one of the few Usenet threads I've participated in over the decades where posters in the wrong have actually not only admitted it but apologised for it. Which makes it something special in Usenet terms :-). Sometimes, you step in crap. When it happens, you can discretely scrape it off outside. Or, you can pretend it wasn't you, and get it all over the carpet. I have too much respect for the experience of this group to not go back outside and scrape it off. G My home airport has a constantly NOTAM'd OOS localizer, so the only way back in is a VOR approach. I should know better about step down fixes. Once I "ghost flew" the approach at my desk, I realized how wrong I was. It took Robert's "you would have crashed" message for me to actually do the "ghost approach", and realize that I really _would_ have crashed. Barry |
#113
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Just for kicks I flew this approach in MS FSX with the CRJ700. I set
the wx to 800 & 3 (no wind) and figured I'd see what kind of acrobatics I would have to do. I crossed CULVE at 1100' with 130 kts and flaps 45. I descended for 680 MDA at around 1800 fpm, which surprisingly did not require any deploy of the spoilers. I broke out of the clouds and continued this descent until reaching the VASI glideslope at around 450' and 1/2 mile out. From here on it was a normal descent and I was able to plop down on the aiming point markers. For what it's worth, FSX had the threshold being at 0.9 DME. I know FSX isn't the same as the real world, and I'm not sure I would want to be dropping that fast at such a low altitude, but it seems like it wouldn't be a stretch for that Gulfstream to make it in on the numbers if they were on top of their game.... Erik CFII, MEI On Jul 23, 12:39 pm, "Robert M. Gary" wrote: The other day I shot the VOR approach into SMO for the first time in low actual. I've often looked at that approach as one of the most difficult I've seen published so it was interesting to actually try it. The weather was 008OVC with something like 3sm HZ. I touched down about 3/4 down the runway and was able to stop without a problem. However, while taxiing back, I noticed a Gulf Stream land right on the numbers. There is no way you can tell me he properly flew the approach and was able to touch on the numbers. The approach is published as a circle to land (I assume because of the extreme nature of the decent) but they certainly were not offering to allow anyone to circle. In fact there was a steady line of jets coming in, it would probably have been unlikely to get a circle approved. Last night I departed. AWOS was reporting 005OVC. I took off right around 21:10. There was a large Citation right behind me picking up his clearance. I didn't ever hear him depart on approach frequency so I'm assuming he missed his curfew and his execs got stranded. -Robert |
#114
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On Jul 27, 6:39 pm, TakeFlight wrote:
Just for kicks I flew this approach in MS FSX with the CRJ700. I set the wx to 800 & 3 (no wind) and figured I'd see what kind of acrobatics I would have to do. I crossed CULVE at 1100' with 130 kts and flaps 45. I descended for 680 MDA at around 1800 fpm, which surprisingly did not require any deploy of the spoilers. FWIW, I believe I remember reading an NTSB report of a Gulf crash (at i believe Aspen). While it wasn't in the POH, the policy of the charter company was that spoilers were not to be deployed when landing gear or flaps were extended...It was mentioned in the report because investigation revealed that the spoilers were extended on impact... I broke out of the clouds and continued this descent until reaching the VASI glideslope at around 450' and 1/2 mile out. From here on it was a normal descent and I was able to plop down on the aiming point markers. Out of curiosity, what was your "speed" at 1800 fpm? I thought SMO had a PAPI on 21 but it is FSX... For what it's worth, FSX had the threshold being at 0.9 DME. Sounds about right (maybe a bit long...) |
#115
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I was able to hold 130 kts all the way down. My intent was to pin the
speed and see what kind of descent rate I would get (and need) to pull it off. I wasn't expecting to get that much without dropping the spoilers at least 1/4, but I was at idle, which probably isn't SOP...In all fairness, I've never flown a "real" jet, unless the 737 sim at UAL counts ![]() You're right about the lights...it is a PAPI in FSX. Out of curiosity, what was your "speed" at 1800 fpm? I thought SMO had a PAPI on 21 but it is FSX... For what it's worth, FSX had the threshold being at 0.9 DME. Sounds about right (maybe a bit long...) |
#116
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Robert M. Gary wrote:
Maybe easy in a 172 but not in my Mooney. With gear and flaps out and power at idle I don't think I can do 885 ft/min without a lot of slipping. Even if I could there is still the issue of going from 90 knots approach speed down to 70 knots threshold crossing speed. Go ahead and slow to 70 earlier. Your angle of descent is steeper at 70 than at 90. DB |
#117
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Robert M. Gary wrote:
Of course I came in high and fast. That's really the point of this thread, that the approach requires you to be high and fast (my minimum IFR approach speed is 90 knots) and of course I was 1120 about 2 miles from the end of the runway as required by the approach. What's the rationale for the minimum IFR approach speed of 90 knots? A slower approach speed will get you the required descent angle. Try flying approaches at different speeds in VMC and see what you get. DB |
#118
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Robert M. Gary wrote:
And that your approach speed and threshold crossing speed are the same (i,e. that you don't need additional room to slow down). There's no reason they can't be the same, e.g. 70 knots, if that's what you need to make the descent angle. DB |
#119
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karl gruber wrote:
I have never used NACO charts, ever. From the NACO chart I downloaded, there are four identical asterisks. It is very easy to read the chart as I did, as one of the asterisk points to crossing at the lower altitude. Another poster read it that way as well. The Jeppesen charts show no such ambiguity. I agree, Karl. With the benefit of all this discussion and sitting comfortably at my workstation, the chart is unambiguous. If I were prepping the approach while trying to fly the airplane (which *does* happen sometimes) I'm not sure I couldn't have been similarly misled. I think NACO could find a better way to convey the correct information. DB |
#120
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In article ,
Dave Butler wrote: karl gruber wrote: I have never used NACO charts, ever. From the NACO chart I downloaded, there are four identical asterisks. It is very easy to read the chart as I did, as one of the asterisk points to crossing at the lower altitude. Another poster read it that way as well. The Jeppesen charts show no such ambiguity. I agree, Karl. With the benefit of all this discussion and sitting comfortably at my workstation, the chart is unambiguous. If I were prepping the approach while trying to fly the airplane (which *does* happen sometimes) I'm not sure I couldn't have been similarly misled. I think NACO could find a better way to convey the correct information. As a long-time NACO chart user, I found it unambiguous, but that wasn't the point I was concentrating on the later parts of this thread, which was: didn't *anyone* who advocated going below 1120 immediately after BEVEY notice the obstructions? Doesn't anyone else look at things like that as well as the bare minimums? Unlike Karl, I'm no ATP, but it's typically one of the first things I look at with an unfamiliar approach... Hamish |
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