MIL-STD-1822A(USAF)
4.3.1.14 Develop Electrical Interface Control Drawing (EICD).
The EICD is a signature-controlled drawing set detailing the aircraft/nuclear interface and associated electrical systems. The FDAR is part of the EICD; the EICD must be provided to the using agency in the same time frame as the FDAR. Revisions to the EICD are submitted to DoD and SNL for review and approval. The EICD is signed by the originator, the USAF contracting office, and SNL. The items listed below are included in the EICD. Release system information is to be included as required by the using agency. The EICD consists of at least the following:
a. Signature Block for responsible agency representative.
b. System Block Diagram of the aircraft AMAC and release electrical systems. c. Aircraft AMAC system schematic.
d. Aircraft release system schematic.
e. Aircraft AMAC and release component descriptions.
f. Aircraft AMAC and release power source descriptions.
g. List of drawings that define the nuclear weapons, ancillary test equipment, and training devices appropriate to the aircraft.
h. FDAR (provided separately).
4.3.1.15 FDAR analysis.
The FDAR is reviewed by the DoD and by SNL (Aircraft Compatibility Department) for completeness and accuracy to determine whether or not the aircraft meets the appropriate interface specification. The FDAR is formally approved by SNL and the DoD. The FDAR and EICD are the prime source documents used in the preparation of a test plan for the AMAC certification tests discussed below. The analyses in the FDAR for interface voltage levels are worst case; thus, it is expected that actual measurements will yield less severe results.
4.3.1.16 Preliminary weapon/aircraft electrical interface tests.
Preliminary aircraft/weapon electrical interface tests are not a requirement for the release of an ACCD but they are generally run as part of a nuclear compatibility certification program for a new aircraft or for an aircraft undergoing significant modifications. The purpose of these tests is to verify that the design at a given point in time will lead to the system meeting nuclear compatibility certification requirements. The PDR supports a preliminary AMAC test. The five- aircraft AMAC tests, described in the next section, are run for the purpose of verifying that operational aircraft actually meet their nuclear compatibility certification requirements. It is a good engineering practice to test the aircraft AMAC system as early as possible when developing a new weapon delivery system or performing a major upgrade. The preliminary AMAC tests may be run on laboratory hardware before full aircraft hardware is available or they may be run on test aircraft that are being used to evaluate the new design, or both.
4.3.1.17 Weapon/aircraft interface and AMAC electrical tests.
The purpose of the AMAC electrical interface testing is to ascertain compliance of the aircraft AMAC system with the required AMAC specification and to establish that the aircraft is indeed electrically compatible with the required set of nuclear weapons. The electrical interface tests are typically some of the last tests to be run in an AMAC certification program. The tests are
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