If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#21
|
|||
|
|||
Roy Smith wrote in message ...
In article ne.com, Andrew Gideon wrote: C Kingsbury wrote: Out East I can't think of any Class D fields that don't have at least 1 ILS, but perhaps in other regions that's sometimes the case? Sniff Now you've made me feel badly about my home class D airport in Northern New Jersey, CDW, that has no precision approach (but we do have a localizer). I'd feel really badly did I not know that Hartford, in CT, also lacks a precision approach. They don't even have a localizer; just an LDA. [I think that this LDA lets you off pointing not at the airport, but at a now closed airport across a river. But I may be recalling incorrectly.] - Andrew In addition to Hartford and Caldwell, there's also Danburry which only has a localizer. Duh, Beverly (BVY) which I've flown into also has a localizer-only approach. Post first, think later... Best, -cwk. |
#22
|
|||
|
|||
"C Kingsbury" wrote in message
om... With WAAS underway, it seems predictable that non-precision approaches will be joining colored airways in the dustbin of history. If the FAA This is unlikely when one considers that a number of airports which currently have WAAS approaches have non-precision minimums which are lower than the WAAS minimums. Also consider that WAAS approaches can only be designed to airports clear of obstructions according to TERPS; thus lots of airports will remain eligible only for non-precision approaches. -------------------- Richard Kaplan www.flyimc.com |
#23
|
|||
|
|||
This is unlikely when one considers that a number of airports which
currently have WAAS approaches have non-precision minimums which are lower than the WAAS minimums. Do you have some examples? |
#24
|
|||
|
|||
"Richard Kaplan" wrote in message news:1095562995.6eAYDxNjAfSfAEnPws5pJw@teranews. ..
"C Kingsbury" wrote in message om... With WAAS underway, it seems predictable that non-precision approaches will be joining colored airways in the dustbin of history. If the FAA This is unlikely when one considers that a number of airports which currently have WAAS approaches have non-precision minimums which are lower than the WAAS minimums. Hmmm, is this just a matter of the TERPS guys being conservative until WAAS is better understood? I can't see any case where WAAS provides poorer positional accuracy than a VOR, and it should at least be very close to the performance of a localizer. Also consider that WAAS approaches can only be designed to airports clear of obstructions according to TERPS; thus lots of airports will remain eligible only for non-precision approaches. Heh. Good point, I hadn't thought about that so much. Actually, an interesting case-study can be seen looking at the different approaches for Rutland, VT (http://www.airnav.com/airport/KRUT) which is down in a valley with a gaggle of towers. With its proximity to several major ski resorts it gets a fair deal of light bizjet traffic. Approach | Minima AGL (all straight-in) ===========|============= LOC 19 | 2100 VOR-DME 19 | 1800 GPS 19 | 1400 LOC+DME 19 | 900 According to these plates, the angle of descent in the final segment ranges between 3.35-3.72 degrees, as compared to a 3deg standard ILS. Is there any reason why using WAAS, it wouldn't help to basically setup a virtual glideslope that brings the plane down to the minimum at the appropriate point, and then "levels off" until the missed approach point? Well, other than the fact that perhaps no one has thought about designing such a procedure, I suppose... Still, at the very least every airport should be able to support minimums equivalent to those that would be provided by a LOC-DME installation. You can't change the dictates of terrain but at least you don't have to pay to install and maintain a shed full of radio equipment. Best, -cwk. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
"bush flying" in the suburbs? | [email protected] | Home Built | 85 | December 28th 04 11:04 PM |
Diamond DA-40 with G-1000 pirep | C J Campbell | Instrument Flight Rules | 117 | July 22nd 04 05:40 PM |
Fixing the Transponder with Duct Tape and Aluminum Foil | Ron Wanttaja | Home Built | 45 | March 14th 04 12:18 AM |
Off topic - Landing of a B-17 | Ghost | Home Built | 2 | October 28th 03 04:35 PM |
2nd update on Review of Plasma II Ignition System | MikeremlaP | Home Built | 8 | July 22nd 03 01:37 AM |