JonathanRP
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Posts: 81
Joined: Tue Sep 20, 2016 7:38 pm

Virgin Atlantic (And EY) ILS deviations at HKG

Sat Mar 07, 2020 6:53 pm

 
GalaxyFlyer
Posts: 4910
Joined: Fri Jan 01, 2016 4:44 am

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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airportugal310
Posts: 3558
Joined: Sun Apr 11, 2004 12:49 pm

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.”
 
N47
Posts: 72
Joined: Tue Sep 26, 2017 7:38 pm

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: http://avherald.com/h?article=4ba33b1c

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 http://navcom.de/ispa04pT.pdf. The paper focuses on modeling, however, these scenarios have been observed by flight inspection aircraft as well.

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