Zie o.a. AIP:
4 SSR TRANSPONDER
4.1 Elementary surveillance
Aircraft shall be equipped with a mode S transponder with elementary surveillance (ELS) functionality. The equipment must be in accordance with the technical specifications laid down in ICAO Annex 10, volume IV, amendment 77.
Activation of mode A/C transponders is prohibited in the Amsterdam FIR.
Exempted from the mandatory carriage of a mode S transponder are:
* motorised VFR flights in class G airspace below 1200 ft AMSL (excluding the NSAA, see ENR 2.2).
* non-motorised aircraft (gliders, hanggliders, parasailers or balloons) outside the transponder mandatory zones (TMZ) and NSAA, see ENR 2.2.
Carriage of a mode S transponder is strongly recommended in the UK North Sea area V, this recommendation is published in the UK AIP and regulation.
Denk nog wel HIER aan.
EDIT: voor wat betreft de ELT : http://www.ais-netherlands.nl/aim/AICB/pdf/b07-08.pdf