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Sonic Boom's Over West Yorkshire UK

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Old 2nd May 2016, 21:13
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Sonic Boom's Over West Yorkshire UK

Tonight approx 2100UTC (2200UK Local) Two Sonic Booms overhead this area. Aircraft Noise heard but going distant very fast. Many people out on the street as it was a really odd experience and 'felt' like the house 'moved'. I kid you not , I am an experienced aviation person and know this was rather unusual to say the least.
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Old 2nd May 2016, 21:26
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Speculating, but that could be the aircraft performing an escort into Newcastle, EGNT. They're still floating about as I type.

Someone with armchair mode S might have a better picture.
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Old 2nd May 2016, 21:34
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QRA launch from Coningsby to intercept/escort AF1558 into NCL, lost comms...
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Old 2nd May 2016, 21:34
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Friends all over what's app in Leeds saying people out in streets and car alarms going off

Seems very unusual to be going so low over a city super sonic?
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Old 2nd May 2016, 21:41
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Some Twitter updates in the link below:

2 May 2016 at 10:20pm

Typhoon fighter jet creates sonic boom across the region

A sonic boom has been heard over various parts of the region after a typhoon jet flew over Leeds-Bradford airport.

A sonic boom is the sound associated with the shock waves created by an object traveling through the air faster than the speed of sound. Sonic booms generate enormous amounts of sound energy, sounding much like an explosion.

An unofficial twitter account which monitors activity at RAF Coningsby says it believes the bangs were caused by typhoon jets.
Typhoon fighter jet creates sonic boom across the region | Calendar - ITV News
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Old 2nd May 2016, 21:44
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Deleted - Airbubba beat me to it.
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Old 2nd May 2016, 21:53
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Reports on social media saying intercept on AF1558 en route CDG - NCL due loss of Comms.

Tea and no biscuits, mon ami?
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Old 2nd May 2016, 21:54
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Is it me or is AF1558's flightpath a bit odd? Heading towards the sea after Leeds, instead of towards Newcastle?

https://www.flightradar24.com/data/f...f1558/#9976d61
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Old 2nd May 2016, 21:59
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Is it me or is AF1558's flightpath a bit odd? Heading towards the sea after Leeds, instead of towards Newcastle?
Maybe "under orders" being steered away from centres of population?
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Old 2nd May 2016, 22:00
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Is it me or is AF1558's flightpath a bit odd? Heading towards the sea after Leeds, instead of towards Newcastle?
I wonder if the 90 degree right turn over Harrogate was where the interception took place and thereafter the flight path was as advised by the Typhoons?
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Old 2nd May 2016, 22:05
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Authority to go supersonic for lost comms? Really!

Someone needs to rethink what is "exceptional circumstances"
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Old 2nd May 2016, 22:25
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I wasn't familiar with the term QRA and ran across this excellent television piece on the mission:

https://youtu.be/3hijzP1zzLI

Many of us know what's it's like to sit a short call reserve assignment.
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Old 2nd May 2016, 22:28
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Tanker also up currently (drawing circles in the sky off Yorks coast), no doubt related.
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Old 2nd May 2016, 23:39
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Originally Posted by highflyer40
Authority to go supersonic for lost comms? Really!

Someone needs to rethink what is "exceptional circumstances"
"Lost Comms" is one of the identified attack profiles for a hijacked aeroplane on a suicide mission. If you ever feel you want some company while flying on a lonely nigh just enter UK controlled airspace with no comms. You'll get a couple of instant buddies with a brace of white missiles to chat with...
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Old 3rd May 2016, 00:17
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We heard the commotion on 121.5 this evening.

The AF1558 was repeatedly called on the guard frequency, with no response. The aircraft was then ordered to turn right heading east three times. They then responded, turned and so that was that. At no point did they mention about being intercepted, but they were in contact with a London frequency by this point.

Last edited by Dct_Mopas; 3rd May 2016 at 00:28.
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Old 3rd May 2016, 03:04
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Yup.

"Air France xxxx, if you can hear me…..etc etc"

No drama.
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Old 3rd May 2016, 08:48
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Well done to the RAF ..it also sends out a message to er , those who need to know , just how quick our fast pointy wooshy things get up there..if it sets off your car alarm or wakes the neighbours dog up, then it's a small price to pay...be grateful we have it
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Old 3rd May 2016, 08:57
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Jet noise (and presumably sonic booms) - the sound of freedom!

The sound of freedom
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Old 3rd May 2016, 10:11
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Authority to go supersonic for lost comms? Really!
If you're trying to catch somebody doing 0.8, you'll have to go a bit faster.
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Old 3rd May 2016, 10:18
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I once flew a Citation X across northern germany, was asked by Maastricht if we would agree to be intercepted for training purposes.
Sure we were. Flying at FL470 with Mach 0.92 at that time.
Like 15, 20 minutes later we noticed no interception still, and inquired with ATC.
Reply: they couldn't get you, too high, too fast, you were already way past them and they couldn't go past Mach .95 without risking a supersonic boom from some parts of their planes...
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