FlightAware Discussions

Is this normal or not

Just put my new FA antenna out of my ground floor bedroom window and within seconds I receive this mode s code 43BF33 . Having checked it on the web the results say [EGSS-GND] EGSS/STN London Stansted Airport GB , remarks alt 84600 sq 7777. I’m in Preston Lancs. Thank you.

Have you googled squawk 7777?
https://aviation.stackexchange.com/questions/59964/what-is-the-purpose-of-squawking-7777