Squawk 1000 on Ground

[ACA340]

I've heard we are supposed to Squawk 1000 and leave the transponder on Auto (as opposed to selecting STBY) when parked at the gate in LHR. I have looked for this in the online UK AIP and have been unable to find it. So far our company is not doing this. Can anyone give me a reference where this can be found, either online or otherwise?

[SuperRanger]

Originally Posted by Preppy

After parking the Mode A code 1000 must be set before selecting OFF or STDBY.

any idea why 1000 before selecting OFF?? Is there a time interval from selecting from 1000 to selecting OFF/STBY?
tks

[noflow]

1000 is selected to avoid the possibility of a transponder being switched on inadvertently and displaying a squawk code in use by another flight.

[Pontius' Pilot]

Preppy, do you have the reference number?

[Preppy]

Pontius' Pilot

The above reference for LHR transponder settings can be found at:

UK AIP LONDON HEATHROW (27 Oct 05) AD 2-EGLL-1-11

It's available at this address:

http://www.ais.org.uk/aes/pubs/aip/p...es/302LL01.PDF

Access to this website is free - you will need password access, which I recall was simple to fix.

[Daysleeper]

So any ideas why 1000 and why not 0000?

[Eff Oh]

Present company sets 0000, previous company was 2000. Now 1000. 2000 is code for crossing FIR boundry without clearence I believe. Not sure about 1000 or 0000.