This specification establishes the dimensional interchangeability
and replaceability requirements for certain parts,subassemblies, assemblies, units, sets, and installation provisions for aerospace vehicles (se6e. 1), as listed herein, and which are controlled items as defined in paragrap6h.2 .2. This specification applies to the aerospace vehicle and other elements as may be
defined herein, which are peculiar and b em uisntt egrated to provide
an operational weapon capable of effectively meeting the established performance requirements. These requirements are established to provide or promote easy and rapid assembly of controlled items manufactured by oorn em ore sources, minimize
logistic requirements, assure usable parts; and conserve resources.
It is mandatory that interchangeabiliitny accordance with this
specification shall be a design requirement during development of an article. This specification shall be strictly complied with when incorporated (a) into any production contract for aerospace
vehicles, and (b) into any aerospace vehicle development contract
when such development will proceteod production, unless otherwise
specified in any said contract.