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Who can land in 'fog'
I read a report about a local airport with this statement:
"With existing Instrument Landing System (ILS) technology, inclement weather, such as fog, is not a material obstacle to commercial service operations." I was under the impression that the FAA says fog is 1/4 mile visibility. Can anyone legally land in fog? |
#2
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Who can land in 'fog'
Most Cat II and Cat III approaches can land in fog.
Mike MU-2 wrote in message oups.com... I read a report about a local airport with this statement: "With existing Instrument Landing System (ILS) technology, inclement weather, such as fog, is not a material obstacle to commercial service operations." I was under the impression that the FAA says fog is 1/4 mile visibility. Can anyone legally land in fog? |
#3
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Who can land in 'fog'
Is there somewhere I can find out if this airport (KORH) has an
appropriate Cat II or Cat III Approach? I thought I heard it was a Cat I. |
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Who can land in 'fog'
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#5
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Who can land in 'fog'
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#6
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Who can land in 'fog'
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#7
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Who can land in 'fog'
ORH does not have a Cat II or III approach. Keep in mind that he visibility
that controls the approach is "flight visibility" not "ground visibility" and when there is fog, flight visibility is usually greater than ground visibility. Most Cat II and III approaches are at major airports. One of the requirements is that the runway must have centerline lighting which is generally only found at the largest airports. Mike MU-2 wrote in message oups.com... Is there somewhere I can find out if this airport (KORH) has an appropriate Cat II or Cat III Approach? I thought I heard it was a Cat I. |
#8
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Who can land in 'fog'
wrote in message
oups.com... Is there somewhere I can find out if this airport (KORH) has an appropriate Cat II or Cat III Approach? Generally speaking, you can look at the A/FD information which is usually up-to-date at www.airnav.com. If a Cat II or Cat III ILS approach is not listed, then the airport isn't equipped for Cat II or Cat III approaches (I think lighting and airport markings is the primary criteria). Compare entries for major commercial airports, like KSEA, KLAX, or KLGA, to see what an airport that does have Cat II and Cat III approaches looks like. As far as your original question goes: It is theoretically possible for an airplane to land using a Cat I approach in fog. I don't know the exact cut-off to differentiate between "fog" and "mist", but I doubt the article you're concerned about is actually using an official definition. So, in the colloquial definition of "fog", visibility could be anywhere from as much as a mile, maybe even more, to as low as 0 feet. A Cat I approach isn't sufficient for 0 visibility, but it's plenty for 1 mile (and visibilities lower than that). So...the answer to "can anyone legally land in fog" is "yes", even if the airport has only a Cat I approach. Pete |
#9
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Who can land in 'fog'
Lower may be approved, specific to the company. As are unpublished
approaches. Peter Clark wrote: On 23 Nov 2005 13:12:22 -0800, wrote: Is there somewhere I can find out if this airport (KORH) has an appropriate Cat II or Cat III Approach? I thought I heard it was a Cat I. Sorry, not enough coffee today. ORH shouldn't (to my knowledge of the regs) have anyone landing in 1/4 mi since 1/2 is the minimum for the published approaches. They'd have to go to Bradley in CT, or Logan for the nearest cat 2/3 approaches that I can think of/find off the top of my head. |
#10
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Who can land in 'fog'
Mike Rapoport wrote:
Most Cat II and III approaches are at major airports. One of the requirements is that the runway must have centerline lighting which is generally only found at the largest airports. Could the presence of a CAT II or III approach also be a function of a greater occurrence of low visibility? My home airport, Syracuse (KSYR), has a CAT II ILS, yet it is only a class C airport. During the winter we experience heavy lake effect snow bands off Lake Ontario and I had suspected that this was the reason for a CAT II ILS rather than its size. -- Peter |
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