MIL-HDBK-115B(ARMY)
viable analysis for documentation. The pertinent data obtained as a result of the disassembly procedures should be included in the candidate file.
5.13 Initial inspection and testing.
5.13.1 Post-shipment inspection. To preclude the replication of
defects, the hardware provided for reverse engineering should be inspected for possible damage in shipment. The necessary documentation for control of Government Furnished Equipment (GFE), i.e., Damage Reports or Failed
Item Reports (Form DD-1149), should be generated as required. An initial operating test should be performed to ensure the item functions in accordance with established performance specifications.
5.13.2 Pre-disassembly photographs. The hardware should be photographed prior to and during disassembly since, in some cases, no other record of the item exists. In addition, since the piece-parts will be identified by bagging and tagging, their position in the assembly should be noted.
5.14 Physical configuration audit (PCA)
5.14.1 Formal examination. The PCA is the formal examination of the as-built version of a configuration item against its technical documentation in order to establish the configuration item's product baseline. A Functional Configuration Audit (FCA) should be conducted to ensure the item performs in accordance with established performance specifications.
5.14.2 Hardware/documentation comparison. The hardware provided for reverse engineering should be examined against the unrestricted technical documentation available, such as manuals, drawings, specifications, etc., to ensure the hardware is accurately reflected by the documentation. The hardware should be compared for uniformity of components, particularly fabricated parts. In the event that discrepancies or inconsistencies are discovered, the hardware should take precedence over the existing documentation for reverse engineering purposes, and all discrepancies should be reported to the cognizant command. Often electronic assemblies will use components of a higher reliability class and a decision will be required on which takes precedence, the hardware or the existing documentation. This should be done by the project engineer familiar with the initial testing of the item during the acquisition cycle.
5.15 Initial measurements. Prior to disassembly, all dimensions and electronic data should be recorded, such as input/output parameters, clearances, torque values, and assembly critical dimensions that would be unobtainable after disassembly. On PCBs in particular, "pads" or other information may be destroyed during disassembly. The measurements should
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