(3)In order to allow to progressively phase-in a system of screening for liquid explosives, the Annex to Commission Regulation (EU) No 297/2010 of 9 April 2010 amending Regulation (EC) No 272/2009 supplementing the common basic standards on civil aviation securitynote established two dates: 29 April 2011 for the screening of liquids, aerosols and gels (LAGs) obtained at a third country airport or on board an aircraft of a non-Community air carrier and 29 April 2013 for the screening of all liquids, aerosols and gels.