MIL-I-8500D

Abstract

This specification establishes the dimensional interchangeability and replaceability requirements for certain parts, subassemblies, assemblies, units, sets, and installation provisions for aerospace vehicles (see <a>6.1</a>), as listed herein, and which are controlled items as defined in paragraph 6.2.2. This specification applies to the aerospace vehicle and other elements as may be defined herein, which are peculiar and must be integrated 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 one or more sources, minimize logistic requirements, assure usable parts, and conserve resources. It is mandatory that interchangeability in 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 proceed to production, unless otherwise specified in any said contract. <br>Interchangeability and replaceability as defined and specified herein shall be indicated for a specific article in terms of Interchangeability-Replaceability Working Lists. <b><u>Intended Use:</u></b> This specification is intended for use on contracts for (a) the manufacture of operational aerospace vehicles, and (b) the modification of inservice aerospace vehicles (Class I changes, as defined in MIL-STD-480) that alter, add or replace controlled items as defined herein. Contracts for accomplishing changes on inservice aerospace vehicles should specify the degree of conformance to the requirements as specified herein, based on the magnitude of the change and the quantity of aerospace vehicles involved. Unless otherwise specified, the requirements of this specification should (a) apply to prototype/development vehicles on contracts for modification of inservice aerospace vehicles, and (b) not apply to contracts for experimental/service test/development aerospace vehicles or Army missiles. <br>