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Author Topic: Loss of Glideslope at JFK  (Read 4875 times)
RonR
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« on: November 27, 2013, 11:01:47 AM »

KJFK experienced a momentary loss of the glideslope for 22L this morning at around 10:06AM.  It probably lasted only about 20 to 30 seconds but it caused an Air France flight to question it and a mere two seconds later a Jet Blue flight to go around.  Five seconds later everything was back to normal...The attached audio clip was not edited in any way, nothing was taken out...it all took place in the span of about 35 seconds.

Ron
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ZBW/ZNY/ZDC (JFK Area) #1
ZBW/ZNY/ZDC (JFK Area) #2
ZBW/ZNY/ZDC (JFK Area) #3
ZBW/ZNY/ZDC (JFK Area) #4
ZBW Boston Center (CLIPR32/HTO31)
ZBW Boston Center (DXR19/SOUTHIE49)
flyflyfly
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« Reply #1 on: November 27, 2013, 02:11:02 PM »

Many airports have "expect short-time ILS interference" as a standard warning in their ATIS messages. Often happens when there's a taxiway near the GS antenna and large aircraft taxi along. Not sure if that's an issue at JFK though.
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RonR
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« Reply #2 on: November 27, 2013, 05:09:57 PM »

I've never heard this issue before at JFK so it sounds like it was a little glitch the lasted only a few seconds.  The controller sure seemed surprised when the Air France flight asked about it...

Maybe a seagull or two landed on the glideslope antenna  smiley
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ZBW/ZNY/ZDC (JFK Area) #1
ZBW/ZNY/ZDC (JFK Area) #2
ZBW/ZNY/ZDC (JFK Area) #3
ZBW/ZNY/ZDC (JFK Area) #4
ZBW Boston Center (CLIPR32/HTO31)
ZBW Boston Center (DXR19/SOUTHIE49)
Jetblast1
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« Reply #3 on: November 27, 2013, 07:33:20 PM »

Did ISS (space center) have the signal?      evil
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swa4678
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« Reply #4 on: December 02, 2013, 11:59:39 AM »

Many airports have "expect short-time ILS interference" as a standard warning in their ATIS messages. Often happens when there's a taxiway near the GS antenna and large aircraft taxi along. Not sure if that's an issue at JFK though.
Do these airports perhaps not have ILS critical area lines in addition to hold short lines?
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Robert Larson
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« Reply #5 on: December 10, 2013, 10:04:19 PM »

I do not see an ILS critical area for 22L.  JFK does have them for 13L -- that's the only ones I see on the google map anyway.
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