06/06/20 NOTAM

[Finty]

Sounds like he’s switching to 133.750

[nitro999]

Clear to land R27

[Noddi3]

Yesterday the U2 showed up RTB on ADSBexchange, but not tonight, was it an anomaly?
I've been watching and listening for months, finally got an OTT sighting yesterday but I thought it was odd he was visible on ADSBexchange.

[nitro999]

Yesterday the U2 showed up RTB on ADSBexchange, but not tonight, was it an anomaly?
I've been watching and listening for months, finally got an OTT sighting yesterday but I thought it was odd he was visible on ADSBexchange.

They do show up on ADSB occasionally - more often though they don't

[SamP]

Sometimes they have their Mode-S transmitter on, sometimes not. It is rare to see, no idea why they do when they do.

[Spitfire88]

Should be an RAF c130 overnighting at Fairford tonight

[nitro999]

Interesting. NOTAM looks to have been taken down.

[Spitfire88]

It was due to stay over last night as well but was scrubbed due to wind, last I heard both stay overs had been cancelled but the herc is now up dropping so might be back on.

[nitro999]

I'm sure there's a reason, just odd it would nightstop at FFD given Brize is so close!

[Spitfire88]

Brize runway was due to be closed for runway work

[zero_gravity]

An interesting feature about yesterday's flight is that it didn't use Mode A/C until it passed 40K on the outbound leg.

On return , it didn't use Mode A/c at all until very near the airfield.

[nitro999]

An interesting feature about yesterday's flight is that it didn't use Mode A/C until it passed 40K on the outbound leg.

On return , it didn't use Mode A/c at all until very near the airfield.

May I ask what you're using to pick up Mode A/c please? I get ground ADSB at FFD from where I am, but havent been picking up anything at all using Dump1090 with the mode a/c switch enabled. Many thanks.

[POL]

When you say "it didn't use" do you actually mean "I didn't pick up"?

I'd be surprised it it didn't use A/C and Swanwick Mil were happy to work off a primary radar return only...

[zero_gravity]

Mode A/C was not " picked " up anywhere across the UK on its return flight.
I'm not aware that the frequency/mode can be changed , but maybe they relied on IFF and codes based on yesterday's Euro card tactical codes mode 1,2 and 3 ?