It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport
and had white lights flashing on wing tips. I couldn't see any
navigation lights. What might that have been doing?

Harry Bloomfield wrote:

It must have done at my count 40 very tight circles

when/where?

On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips. I couldn't see any navigation
lights. What might that have been doing?

Police sometimes circle while using Stingray or similar to intercept
criminal or other suspect mobile phones, but they wouldn't normally do
it very low. I suppose they might have been constrained by the proximity
of an airport. At one time you could sometimes see this activity on
FlightRadar but now I think they have the option to prevent it being
displayed.

Andy Burns wrote on 17/04/2021 :
Harry Bloomfield wrote:

It must have done at my count 40 very tight circles

when/where?

West of Garforth, today 20:15 on..

newshound laid this down on his screen :
Police sometimes circle while using Stingray or similar to intercept criminal
or other suspect mobile phones, but they wouldn't normally do it very low. I
suppose they might have been constrained by the proximity of an airport. At
one time you could sometimes see this activity on FlightRadar but now I think
they have the option to prevent it being displayed.

Do West Yorkshire have an police aircraft, I know they have an
helicopter?

"Harry Bloomfield"; "Esq." wrote in message
...
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips. I couldn't see any navigation
lights. What might that have been doing?

Didn't have a chopper handy.

On Sat, 17 Apr 2021 20:41:40 +0100, Harry Bloomfield, Esq.
wrote:

It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport
and had white lights flashing on wing tips. I couldn't see any
navigation lights. What might that have been doing?


I saw two military aircraft yesterday (Fri) flying in formation over
Prestwich (3 mi N of Manchester) going roughly North.

SWMBO suggested it might be to do with the D of E funeral.

--
Graham.
%Profound_observation%

Harry Bloomfield wrote:

West of Garforth, today 20:15 on..

Planefinder.net does show a single aircraft arrive from the south, swizz
around for a bit (doesn't look like 40 circles on screen, but don't know
what resolution/interval it records at)

Seemed to spend longer over Huddersfield earlier in the afternoon

https://planefinder.net/flight/UKP155/time/2021-04-17T19:15:00.000Z/speed/20

aircraft is G-POLV, which is a national police plane, so that seems to fit

https://abpic.co.uk/pictures/view/1730258
https://twitter.com/npasnortheast/status/1262633327934222336?lang=en

Burning off fuel, photography, just being a pain to the locals?
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
Harry Bloomfield; "Esq." wrote in message
...
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips. I couldn't see any navigation
lights. What might that have been doing?

And how big a plane, you often see twin engined prop jobs doing that over
traffic hot spots or some event or other here near London apparently.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Andy Burns" wrote in message
...
Harry Bloomfield wrote:

It must have done at my count 40 very tight circles

when/where?

On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation
lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

--
Colin Bignell

In article ,
Brian Gaff \(Sofa\) wrote:
And how big a plane, you often see twin engined prop jobs doing that over
traffic hot spots or some event or other here near London apparently.
Brian

At one point in time, one of the London ILR stations used to use such a
plane.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

Brian Gaff (Sofa) wrote

Burning off fuel,

No point in doing that in tight circles.

photography,

Not usually viable, too hard to focus on what you are photographing.

just being a pain to the locals?

Unlikely.

Harry Bloomfield; "Esq." wrote in message
...
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips. I couldn't see any navigation
lights. What might that have been doing?

"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen
that before and they don't do that in very tight circles.

On Sun, 18 Apr 2021 19:51:18 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


Burning off fuel,

No point in doing that in tight circles.

photography,

Not usually viable, too hard to focus on what you are photographing.

just being a pain to the locals?

Unlikely.

In auto-contradicting mode again, you clinically insane octogenarian senile
pest?

--
Keema Nam addressing nym-shifting senile Rodent:
"You are now exposed as a liar, as well as an ignorant troll."
"MID: .com"

On Sun, 18 Apr 2021 20:03:11 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the obnoxious trolling senile asshole's latest troll****

--
Marland answering senile Rodent's statement, "I don't leak":
"That¢s because so much **** and ****e emanates from your gob that there is
nothing left to exit normally, your arsehole has clammed shut through disuse
and the end of prick is only clear because you are such a ******."
Message-ID:

On 18/04/2021 11:03, Rod Speed wrote:


"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got
bored watching. It had landing lights on, around 10 miles from the
airport and had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen
that before

That depends upon the type of airport, the type and size of aircraft and
how busy it gets. Most of the holding points for my local airfield are
rarely used because it rarely gets that busy.

and they don't do that in very tight circles.

Depends on the size of the aircraft. I used to in mine.

--
Colin Bignell

On Sun, 18 Apr 2021 12:15:34 +0100, nightjar wrote:

On 18/04/2021 11:03, Rod Speed wrote:


"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got
bored watching. It had landing lights on, around 10 miles from the
airport and had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen that before

That depends upon the type of airport, the type and size of aircraft and
how busy it gets. Most of the holding points for my local airfield are
rarely used because it rarely gets that busy.

and they don't do that in very tight circles.

Depends on the size of the aircraft. I used to in mine.

+1 except if the FI was on-board then they had to be proper race-track
ovals :-)

Avpx
(P1 lapsed)


--
'People need vampires,' she [Granny] said. 'They helps 'em remember what
stakes and garlic are for.' (Carpe Jugulum)
Sun 10092 Sep 12:20:02 BST 1993
12:20:02 up 11 days, 17:54, 11 users, load average: 4.15, 4.05, 4.12

On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport and
had white lights flashing on wing tips. I couldn't see any navigation
lights. What might that have been doing?

We've had the same thing several times. Apparently the police are
playing with a new fixed wing plane.

Bill

After serious thinking Andy Burns wrote :
Planefinder.net does show a single aircraft arrive from the south, swizz
around for a bit (doesn't look like 40 circles on screen, but don't know what
resolution/interval it records at)

The centre of the tight circles was gradually drifting. It was too far
away to ID the type of aircraft, which had the setting sun behind it.
I've never seen one before with flashing white lights on the wing tips.

nightjar has brought this to us :
Waiting at a holding point for permission to join the landing circuit.

It was a very tight circle, the occupants would be dizzy when it
eventually landed.

williamwright expressed precisely :
We've had the same thing several times. Apparently the police are playing
with a new fixed wing plane.

A possible explanation.

On 18/04/2021 15:02, Harry Bloomfield wrote:
nightjar has brought this to us :
Waiting at a holding point for permission to join the landing circuit.

It was a very tight circle, the occupants would be dizzy when it
eventually landed.

It doesn't work that way. The forces are downwards through your seat, so
your inner ear doesn't get disorientated.

--
Colin Bignell

On 18/04/2021 10:44, charles wrote:
In article ,
Brian Gaff \(Sofa\) wrote:
And how big a plane, you often see twin engined prop jobs doing that over
traffic hot spots or some event or other here near London apparently.
Brian
At one point in time, one of the London ILR stations used to use such a
plane.

https://www.flickr.com/photos/mart707/3761207099

On 18/04/2021 06:50, Andy Burns wrote:
Harry Bloomfield wrote:

West of Garforth, today 20:15 on..

Planefinder.net does show a single aircraft arrive from the south, swizz
around for a bit (doesn't look like 40 circles on screen, but don't know
what resolution/interval it records at)

Seemed to spend longer over Huddersfield earlier in the afternoon

https://planefinder.net/flight/UKP155/time/2021-04-17T19:15:00.000Z/speed/20


aircraft is G-POLV, which is a national police plane, so that seems to fit

https://abpic.co.uk/pictures/view/1730258
https://twitter.com/npasnortheast/status/1262633327934222336?lang=en



Interesting link.

But I cannot find a plane landing at Doncaster on the 12th (10.10am to
10.20am ish) that must have landed (I could not see the runway) I was
halfway between Tickhill and Bawtry.

Are military plane hidden from that site?

--
Adam

ARW wrote:

I cannot find a plane landing at Doncaster on the 12th (10.10am to
10.20am ish) that must have landed (I could not see the runway) I was
halfway between Tickhill and Bawtry.

Are military plane hidden from that site?

I don't know if military planes have ADS-B transmitters, or some other
system, or maybe they're allowed to turn them on/off as required?

"nightjar" wrote in message
...
On 18/04/2021 11:03, Rod Speed wrote:


"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got bored
watching. It had landing lights on, around 10 miles from the airport
and had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen
that before

That depends upon the type of airport, the type and size of aircraft and
how busy it gets. Most of the holding points for my local airfield are
rarely used because it rarely gets that busy.

and they don't do that in very tight circles.

Depends on the size of the aircraft.

Bull****.

I used to in mine.

Don't believe it.

On Mon, 19 Apr 2021 05:04:01 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH yet more of the trolling senile asshole's troll****

--
Sqwertz to Rodent Speed:
"This is just a hunch, but I'm betting you're kinda an argumentative
asshole.
MID:

Andy Burns wrote:

I don't know if military planes have ADS-B transmitters

apparently they do.

or some other system, or maybe they're allowed to turn them on/off as
required?

but they can switch from "Mode S" to "Mode 5" when they don't want to be
tracked.

On 18/04/2021 20:04, Rod Speed wrote:


"nightjar" wrote in message
...
On 18/04/2021 11:03, Rod Speed wrote:


"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got
bored watching. It had landing lights on, around 10 miles from the
airport and had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen
that before

That depends upon the type of airport, the type and size of aircraft
and how busy it gets. Most of the holding points for my local airfield
are rarely used because it rarely gets that busy.

and they don't do that in very tight circles.

Depends on the size of the aircraft.

Bull****.

I used to in mine.

Don't believe it.

Flying VFR, you have to keep a lookout for other aircraft. That is much
easier when orbiting (flying in a circle) than when trying to fly a
racetrack. You can orbit purely by using external references. A
racetrack hold needs you to spend a lot of time looking inside the
cockpit at your instruments and at the time. Not a problem when flying
IFR, as ATC radar should keep you safe from other aircraft. A serious
problem when trying to keep a lookout for other aircraft.

--
Colin Bignell

On 18/04/2021 12:21, The Nomad wrote:
On Sun, 18 Apr 2021 12:15:34 +0100, nightjar wrote:

On 18/04/2021 11:03, Rod Speed wrote:


"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got
bored watching. It had landing lights on, around 10 miles from the
airport and had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen that before

That depends upon the type of airport, the type and size of aircraft and
how busy it gets. Most of the holding points for my local airfield are
rarely used because it rarely gets that busy.

and they don't do that in very tight circles.

Depends on the size of the aircraft. I used to in mine.

+1 except if the FI was on-board then they had to be proper race-track
ovals :-)

Avpx
(P1 lapsed)


As a private pilot, I only had to meet my own standards. :-)

--
Colin Bignell

On Sun, 18 Apr 2021 15:04:41 +0100, Harry Bloomfield, Esq.
wrote:

williamwright expressed precisely :
We've had the same thing several times. Apparently the police are playing
with a new fixed wing plane.

A possible explanation.
There was a newspaper (forgot which one) story recently about the
police in Scotland somewhere have bought a few planes and then found
them unsuitable for what they wanted. They were trying to sell them
(cheap) to some UK forces. Maybe this was a trial by prospective
buyers.

"nightjar" wrote in message
...
On 18/04/2021 20:04, Rod Speed wrote:


"nightjar" wrote in message
...
On 18/04/2021 11:03, Rod Speed wrote:


"nightjar" wrote in message
...
On 17/04/2021 20:41, Harry Bloomfield wrote:
It must have done at my count 40 very tight circles, before I got
bored watching. It had landing lights on, around 10 miles from the
airport and had white lights flashing on wing tips.

Visibility strobes.

I couldn't see any navigation lights.

Not necessarily on during daylight.

What might that have been doing?

Waiting at a holding point for permission to join the landing circuit.

If it was that you'd expect that he would have seen
that before

That depends upon the type of airport, the type and size of aircraft and
how busy it gets. Most of the holding points for my local airfield are
rarely used because it rarely gets that busy.

and they don't do that in very tight circles.

Depends on the size of the aircraft.

Bull****.

I used to in mine.

Don't believe it.

Flying VFR, you have to keep a lookout for other aircraft. That is much
easier when orbiting (flying in a circle) than when trying to fly a
racetrack.

But there is no point in doing VERY TIGHT circles because
you cant see anything like as well when doing that.

And it turns out that the very tight circles observed
had the center of the circles drifting over the ground
so they wouldn't have been doing what you claim.

You can orbit purely by using external references. A racetrack hold needs
you to spend a lot of time looking inside the cockpit at your instruments
and at the time. Not a problem when flying IFR, as ATC radar should keep
you safe from other aircraft. A serious problem when trying to keep a
lookout for other aircraft.

And so is VERY TIGHT circles, which is why no one does that.

On Tue, 20 Apr 2021 07:49:32 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile cretin's latest troll**** unread

--
Marland answering senile Rodent's statement, "I don't leak":
"That¢s because so much **** and ****e emanates from your gob that there is
nothing left to exit normally, your arsehole has clammed shut through disuse
and the end of prick is only clear because you are such a ******."
Message-ID:

On 18/04/2021 20:48, Andy Burns wrote:

Andy Burns wrote:

I don't know if military planes have ADS-B transmitters

apparently they do.

or some other system, or maybe they're allowed to turn them on/off as
required?

but they can switch from "Mode S" to "Mode 5" when they don't want to be
tracked.

We see quite a few here, and normally it's turned on.

Andy

Vir Campestris wrote:

Andy Burns wrote:

I don't know if military planes have ADS-B transmitters [...]
apparently they do. but they can switch from "Mode S" to "Mode 5"
when they don't want to be tracked.

We see quite a few here, and normally it's turned on.

I built one of the coke-can antennas for a DVB-T based SDR, it picked up
ADS-B transponders ok ... that's basically how all the flightradar sites
get their data.

http://www.radioforeveryone.com/p/coketenna-easy-cheap-effec.html