The AEF operation has been made even more 'complicated' by insisting on a cockpit warning system
If this is FLARM any complications will be created by the AEF operation. These days there are hundreds of gliders with working FLARM many of which are flown by technical numpties who never the less manage to install a working FLARM which doesn't affect any of the other bits of gadgetry.
Requiring it and the ATS might have something to do with these:
https://www.gov.uk/aaib-reports/6-20...-february-2009
https://www.gov.uk/aaib-reports/5-20...t-14-june-2009