Depot Maintenance:

Requirement to Update Maintenance Analyses Should Be Modified

NSIAD-93-163: Published: Jun 22, 1993. Publicly Released: Jun 22, 1993.

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GAO reviewed the Air Force's implementation of reliability centered maintenance (RCM) analyses, focusing on: (1) Department of Defense (DOD) and service RCM policies; (2) the extent to which the services updated and applied RCM analyses to aircraft and aircraft engines; and (3) alternative programs the services utilize to ensure that preventative maintenance is performed.

GAO found that: (1) the Army has not and does not plan to complete RCM analyses, the Navy plans to spend $16.6 million to complete RCM analyses of its operational aircraft systems and newer systems, and the Air Force has not recently updated its RCM analyses; (2) the cost for the Army to complete its RCM analyses would outweigh the expected benefits of reducing potential maintenance costs; (3) although the services have comparable programs to ensure operational systems maintenance, none of the programs include RCM logic procedures; (4) the Air Force has identified potential benefits from RCM analyses including reduced maintenance support costs, increased aircraft mission availability, reduced parts cost, and early identification of high-cost items requiring maintenance at short intervals; and (5) although transportation officials believe that RCM analyses are beneficial in the early stages of aircraft or aircraft engine program development, the cost-effectiveness of continued RCM analyses is questionable when reliable maintenance data are available to update maintenance tasks and intervals.

Recommendations for Executive Action

  1. Status: Closed - Implemented

    Comments: Service regulations have been revised in the Air Force. Full-blown reliability-centered maintenance analyses are no longer done on operational systems in the Navy.

    Recommendation: The Secretaries of the Army, Navy, and Air Force should revise their regulations to remove the requirement to update RCM analyses on operational systems with both extensive maintenance histories and structured programs to adjust maintenance tasks and intervals.

    Agency Affected: Department of Defense: Department of the Air Force

  2. Status: Closed - Implemented

    Comments: Service regulations have been revised in the Air Force. The Navy no longer does full-blown reliability centered maintenance analyses for operational systems.

    Recommendation: The Secretaries of the Army, Navy, and Air Force should revise their regulations to remove the requirement to update RCM analyses on operational systems with both extensive maintenance histories and structured programs to adjust maintenance tasks and intervals.

    Agency Affected: Department of Defense: Department of the Navy

  3. Status: Closed - Implemented

    Comments: Service regulations have been revised in the Air Force. The Navy no longer performs full-blown reliability centered maintenance analyses for operational systems.

    Recommendation: The Secretaries of the Army, Navy, and Air Force should revise their regulations to remove the requirement to update RCM analyses on operational systems with both extensive maintenance histories and structured programs to adjust maintenance tasks and intervals.

    Agency Affected: Department of Defense: Department of the Army

  4. Status: Closed - Implemented

    Comments: The Navy did not fund planned reliability centered maintenance analysis for its operational systems.

    Recommendation: The Secretary of the Navy should not expend resources to update RCM analyses on any system with extensive maintenance histories and for which a structured program exists to adjust maintenance task requirements and intervals.

    Agency Affected: Department of Defense: Department of the Navy

 

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