The scope of this European Standard is to: ? Provide a requirements document for CMB Manufacturers to produce systems for the Aerospace and Defence industry. ? Identify the minimum performance requirements specific to CMB used on Aerospace and Defence vehicle parts accessed only during ground operations. ? Identify existing standards applicable to CMB. ? Provide a qualification standard for CMB which will use permanently-affixed installation on systems. ? Provide some patterns of data. In addition to any relevant document from certification authorities@ the following documents should be taken into account to define requirements concerning the technical specifications for CMB: ? EUROCAE documents: ED-14@ Environmental Conditions and Test Procedures for Airborne Equipment. ? RTCA documents: DO-160@ Environmental Conditions and Test Procedures for Airborne Equipment. ? Military Standard: MIL-STD-810@ Department of Defense Test Method Standard for Environmental Engineering Considerations and Laboratory Tests.