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Virgin Atlantic (And EY) ILS deviations at HKG

Sat Mar 07, 2020 6:53 pm

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Re: Virgin Atlantic (And EY) ILS deviations at HKG

Sat Mar 07, 2020 9:08 pm

No conclusions have been reached regarding the three incidents.

That says it all...
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Re: Virgin Atlantic (And EY) ILS deviations at HKG

Mon Mar 09, 2020 4:58 pm

Interesting that all three incidents involved a 787-9...could just be a statistical game, or something else. I make no judgement...
“They bought their tickets, they knew what they were getting into. I say, let 'em crash.”
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Re: Virgin Atlantic (And EY) ILS deviations at HKG

Mon Mar 09, 2020 5:33 pm

This sort of stuff happens rather often at major airports, here's a case in Chicago:

Maybe a A380 or 747 landed before these aircraft and as they were leaving the runway the tail reflected the LOC signal and caused the deviation. Another possibility is an aircraft overflying the localizer caused the multipath interference. This is why EDDF (large A380 presence) has different ILS hold short lines specifically for CATIII.

For more technical information, this is a good academic paper to read The paper focuses on modeling, however, these scenarios have been observed by flight inspection aircraft as well.

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