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readytotaxi
Topic Author
Posts: 8789
Joined: Mon Dec 11, 2006 2:09 am

A340 not showing on FR24

Fri May 06, 2022 12:42 pm

An all white A340 just flew over my house having departed from LHR around 13:30, at 6000ft heading southeast. I went to FR24 to check it out and it was nowhere on the map, I know aircraft can show up as blocked but this did not show up at all. :confused:
 
fcogafa
Posts: 1431
Joined: Fri May 16, 2008 4:37 pm

Re: "Invisable" aircraft.

Fri May 06, 2022 12:53 pm

It depends on a mode S signal or mlat, if it wasn't broadcasting mode S the web trackers wouldn't know it was there, much like military using mode a/c only
 
IADCA
Posts: 2592
Joined: Mon Feb 26, 2007 12:24 am

Re: "Invisable" aircraft.

Fri May 06, 2022 1:00 pm

readytotaxi wrote:
An all white A340 just flew over my house having departed from LHR around 13:30, at 6000ft heading southeast. I went to FR24 to check it out and it was nowhere on the map, I know aircraft can show up as blocked but this did not show up at all. :confused:


Some aircraft don't show up at all. Very common for certain types of government operations.
 
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TheDutchman92
Posts: 23
Joined: Wed Dec 19, 2018 9:05 pm

Re: "Invisable" aircraft.

Fri May 06, 2022 1:26 pm

There's a HiFly white tail contracted to the Australian Defence Force, could be that.


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se210
Posts: 330
Joined: Sun Feb 20, 2005 12:03 am

Re: "Invisable" aircraft.

Fri May 06, 2022 3:06 pm

Perhaps you saw this flight. Took off from LHR at 12:25Z (13:30 BST) which matches your timeframe:
A7-AAH A340-313 MSN#528

https://globe.adsbexchange.com/?icao=06a05a&lat=51.321&lon=-0.380&zoom=9.8&showTrace=2022-05-06&leg=1&trackLabels

Coincidentally, there was another "white" A340 which was flying south of LHR 2 hours later (May 6th, 2022) in a southwest direction as MLT330M from HHN (Frankfurt-Hahn Airport, Germany) to BOH (Bournemouth, UK)

Also tracked on ADS-B Exchange: https://globe.adsbexchange.com/?icao=4d21b4&lat=50.874&lon=1.029&zoom=6.7&showTrace=2022-05-06&leg=1&trackLabels&filterType=A34
 
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PM
Posts: 5623
Joined: Wed Feb 09, 2005 5:05 pm

Re: "Invisable" aircraft.

Fri May 06, 2022 3:30 pm

Someone has to say it.

The word is invisible.
 
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readytotaxi
Topic Author
Posts: 8789
Joined: Mon Dec 11, 2006 2:09 am

Re: "Invisable" aircraft.

Fri May 06, 2022 3:45 pm

PM wrote:
Someone has to say it.

The word is invisible.

:white:
 
MoonC
Posts: 416
Joined: Fri Dec 06, 2013 1:26 am

Re: "Invisable" aircraft.

Fri May 06, 2022 4:09 pm

se210 wrote:
Perhaps you saw this flight. Took off from LHR at 12:25Z (13:30 BST) which matches your timeframe:
A7-AAH A340-313 MSN#528

https://globe.adsbexchange.com/?icao=06a05a&lat=51.321&lon=-0.380&zoom=9.8&showTrace=2022-05-06&leg=1&trackLabels

Coincidentally, there was another "white" A340 which was flying south of LHR 2 hours later (May 6th, 2022) in a southwest direction as MLT330M from HHN (Frankfurt-Hahn Airport, Germany) to BOH (Bournemouth, UK)

Also tracked on ADS-B Exchange: https://globe.adsbexchange.com/?icao=4d21b4&lat=50.874&lon=1.029&zoom=6.7&showTrace=2022-05-06&leg=1&trackLabels&filterType=A34


It has to be A7-AAH. It doesn't show up on FR24 anymore. Just like A7-HHK, the A342 and A7-HHH, the A345.

They were all previously visible on FR24, with their informations blocked, but now they're fully hidden.
 
ReverseFlow
Posts: 396
Joined: Mon Mar 14, 2022 4:40 pm

Re: "Invisable" aircraft.

Fri May 06, 2022 6:19 pm

MoonC wrote:
se210 wrote:
Perhaps you saw this flight. Took off from LHR at 12:25Z (13:30 BST) which matches your timeframe:
A7-AAH A340-313 MSN#528

https://globe.adsbexchange.com/?icao=06a05a&lat=51.321&lon=-0.380&zoom=9.8&showTrace=2022-05-06&leg=1&trackLabels

Coincidentally, there was another "white" A340 which was flying south of LHR 2 hours later (May 6th, 2022) in a southwest direction as MLT330M from HHN (Frankfurt-Hahn Airport, Germany) to BOH (Bournemouth, UK)

Also tracked on ADS-B Exchange: https://globe.adsbexchange.com/?icao=4d21b4&lat=50.874&lon=1.029&zoom=6.7&showTrace=2022-05-06&leg=1&trackLabels&filterType=A34


It has to be A7-AAH. It doesn't show up on FR24 anymore. Just like A7-HHK, the A342 and A7-HHH, the A345.

They were all previously visible on FR24, with their informations blocked, but now they're fully hidden.
Probably bringing shopping back from Harrods.

I did read an article once which said that some Sheikh in the Middle East had a plane fly food from Harrods back home once a week. Perhaps it was QTR as they own the place.
 
User avatar
zeke
Posts: 17362
Joined: Thu Dec 14, 2006 1:42 pm

Re: A340 not showing on FR24

Fri May 06, 2022 6:23 pm

This happens after they have a wash, when they get dirty they are easier to see without FR24.

Older A340s needed about 2.5 million each frame to rewire them to get ADS-B installed.

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