MIL-STD-1798 Mechanical Equipment And Subsystems Integrity ProgramThe purpose of this standard is to describe the general process to achieve and maintain the physical and functional integrity of the mechanical elements of aircraft systems. The goal of this integrity program is to achieve the desired level of safety and aircraft availability at the most economic cost across the life cycle of the weapon system. This standard allows the process to be tailored in a competitive environment to meet specific equipment, subsystem, and/or system requirements. The Mechanical Equipment and Subsystems Integrity Program MECSIP is implemented in the planning process and continued until retirement of the system.

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MIL-STD-1798C

5.5.5.1.3.3 EWIS Task Five. (See EWIS MIL-HDBK-525 for more details.)

a. Analyze and provide an overall risk and life assessment of the aircraft electrical system using the findings from the first four EWIS Tasks. (Reference MIL-HDBK-525's appendix F.)

b. Analyze and provide an overall EWIS risk and life assessment using collected data

(EWIS Tasks 1-4).

c. Apply algorithms or models which provide an EWIS risk assessment based on failure histories, failure modes and mechanisms, materials properties, and environmental and maintenance conditions.

d. Address criticality of the wiring system and its impact on aircraft safety, reliability, and availability.

e. Review safety assessment process in MIL-STD-882.

f. Consider electrical fires and system reliability and availability.

5.5.5.1.4 Service Life Assessment Plan Report (SLAP Report).

This report shall list all of the necessary actions required to operate subsystems beyond their original certification basis. This report shall document those items where the certified life can be increased, where corrective action is required and where the certified life must be decreased. This SLAP report is to stand as the new certification basis for the subsystems contained on the platform. It should contain the necessary data to support an airworthiness assessment per

MIL-HDBK-516. The SLAP report shall also address EWIS tasks six and seven (see EWIS Integrity Program MIL-HDBK-525 for more details), which include:

a. Apply Overall Analysis Toward Action Plan (i.e., no changes, implement continuous inspections, partial or total replacement, implement new technologies).

b. Provide recommendations for mitigating risk through inspection, replacement, or upgrading wiring system components; etc.

c. Recommend scheduled inspections over system life.

d. Recommend installation of new technology to improve long-term performance and reduced cost.

e. Determine, based on findings from SLAP phase, when the next iteration of EWIS tasks three through six should occur.

5.5.5.1.5 Service Life Extension Program (SLEP).

The Service Life Extension Program executes those activities identified in the SLAP Report as necessary to extend the life of MECSIP Equipment to achieve the desired MDS service life.

5.5.5.2 Manage system's final five years prior to retirement.

An Integrated Product Team (IPT) should be established to determine the most effective course of actions to take in the final five years prior to weapon system retirement.

5.5.5.2.1 Retirement IPT.

A Retirement IPT shall be established with representatives from the MAJCOMs, SOR, DLA, and the Wing Office. This IPT shall establish supply and liaison procedures.