‹ GR-5.3 Suitability of Controllers GR-5.3.1A › GR-5.3.1 Past version: Effective from 01 Oct 2010 to 31 Mar 2012 To view other versions open the versions tab on the right Licensees must satisfy the CBB of the suitability of their (proposed) controllers. October 2010 ‹ GR-5.3 Suitability of Controllers GR-5.3.1A ›