Since that time, an action plan has been developed and agreed with the goal of requiring States to use proven alternatives in new airframe designs beginning in 2009.

Although halons have been phased out in Parties not operating under Article 5 since 1994 and have been significantly reduced in Parties operating under Article 5, halons continue to be used in the aviation industry, both in existing planes and even in the planning of new airframe designs.

These parameters included a 600 millimetre limit for the diameter of the airframe of all liquid propellant missiles, the prohibition of any modifications of SA 2 missiles relevant to their conversion into a surface to surface mode, the prohibition of tests of SA 2 engines with shut off valves or modified for extended flight duration and the prohibition of the use of original or modified parts and components of SA 2 missiles for use in a surface to surface role.