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#11
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Richard Hertz wrote: I don't have that kind of money to put the equipment in my plane. ILS system seems to be fine for me. ILS is a fine system, and has served us well for many years as a robust precision approach and landing system. Category III facilites are particularly awesome, representing bleeding edge refinements in a system that has been around for a long time. In the early 1970s they replaced most of the "WW II" components with much more stable localizers, at least at the major airports. |
#12
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JJ wrote: LAAS (Local Area Augmentation System) was to provide CAT 2 and 3 ILS capability at major airports by fine tuning GPS and up loading correction signals to aircraft. FAA has canceled the program. Looks like the ground based ILS systems once slated for removal by 2010 are here to stay. There is a variation on this theme, however. Boeing has spent no small amount of money developing and testing its own LAAS system at Mose Lake, Washington. It does awesome things with appropriate equipment Boeings, which is mainly a few 737-900s at the present time. The aircraft can fly RF legs (radius to fix legs) so even the turns are positive course guidance along a precisely defined arc segment. I suspect the Boeing model could become a future private system for advanced RNP instrument approaches at difficult airports, |
#13
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#14
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#15
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The LAAS correction uplink is in the 150MHZ area. It would have been
more susceptible to FM interference than a Localizer. Just another little tidbit of info. Bob Noel wrote: In article , Javier Henderson wrote: except in for the problems with ILS in Europe... What's the problem with ILS approaches in Europe? Frequency congestion? yes. and interference from FM radio stations. |
#16
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"JJ" wrote in message ... LAAS (Local Area Augmentation System) was to provide CAT 2 and 3 ILS capability at major airports by fine tuning GPS and up loading correction signals to aircraft. FAA has canceled the program. Looks like the ground based ILS systems once slated for removal by 2010 are here to stay. I have not seen a news report of that anywhere. Do you have a link with more details? |
#17
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"Bob Noel" wrote in message ... In article , JJ wrote: The LAAS correction uplink is in the 150MHZ area. It would have been more susceptible to FM interference than a Localizer. Just another little tidbit of info. eh? a (presumably) digital signal in the 150 MHz area would have more susceptible to FM interference than a localizer around 108 MHz? The vhf digital link is adjacent to the VHF com. |
#18
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Big link but under www.aviationnow.com
http://www.aviationnow.com/avnow/sea...cut0203 4.xml C J Campbell wrote: "JJ" wrote in message ... LAAS (Local Area Augmentation System) was to provide CAT 2 and 3 ILS capability at major airports by fine tuning GPS and up loading correction signals to aircraft. FAA has canceled the program. Looks like the ground based ILS systems once slated for removal by 2010 are here to stay. I have not seen a news report of that anywhere. Do you have a link with more details? |
#19
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#20
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"Stan Gosnell" wrote in message ... Very possibly. Harmonics can do as much damage as the fundamental frequency. But it appears to me, from reading both on and between the lines, that money was the driver here, as it always is. The contractor led the agency down the primrose path, claiming 80% completion when it was actually only 20%, or similar figures. The new administrator was not amused. Rather than simply rap some knuckles, the entire program was cancelled, thus punishing all aviation interests. The whole WAAS/LAAS mess has been circling the drain since Kenneth Mead found Garvey in violation of the Inspector General's Act; for exceeding her Authority signing WAAS contracts. There are better ways for FAA to spend the aviation trust fund. |
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