Defines the minimum design and performance criteria and testing methods of passive fire resistant containers (FRCs) for carriage on aircraft main deck, to be used on either of the following: a) in those cargo compartments of civil transport aircraft where they constitute one means of complying with applicable airworthiness regulations; and b) on a voluntary basis, when deemed appropriate by operators to improve fire protection in aircraft cargo compartments where airworthiness regulations do not currently mandate their use.