DI-EMCS-81855, DATA ITEM DESCRIPTION: HIGH-ALTITUDE EMP (HEMP) HARDNESS MAINTENANCE AND HARDNESS SURVEILLANCE (HM/HS) PLAN (28-NOV-2011)

DI-EMCS-81855, DATA ITEM DESCRIPTION: HIGH-ALTITUDE EMP (HEMP) HARDNESS MAINTENANCE AND HARDNESS SURVEILLANCE (HM/HS) PLAN (28-NOV-2011)., The High-Altitude EMP (HEMP) Hardness Maintenance and Hardness Surveillance (HM/HS) Plan describes HM and inspection procedures, HS test procedures, re-verification test procedures, supply support and training requirements, and technical data requirements for implementing the HM/HS Program described in MIL-STD-3023, section 5.8. The purpose of the HM/HS program is to ensure that the hardening is preserved throughout the service life of the aircraft. A HEMP HM/HS Program is required to mitigate degradation in the aircraft’s HEMP Protection Subsystem (HPS) that occurs over the life-cycle. The Plan provides the means for the government to ensure that government prescribed methods and procedures are used by aircraft maintainers and that fielded aircraft undergoing planned modifications and subject to normal wear and tear remain HEMP-survivable over their life-cycle. 1. This DID contains the format and content preparation instructions for data resulting from the work tasks described in section 5.8 of MIL-STD-3023 and is intended for aircraft systems. It is normally applied immediately after aircraft are delivered to a user command. 2. This DID is related to DI-EMCS-81847, DI-EMCS-81849, DI-EMCS-81850, DI-EMCS-81852 and DI-EMCS-81854.