MIL-STD-2173 Base Document:1986

1. SCOPE
1.1 Purpose
1.2 Application
1.3 Logistics Support Analysis, Reliability-
       Centered Maintenance
1.4 Reliability-Centered Maintenance program
2. REFERENCED DOCUMENTS
2.1 Government documents
2.1.1 Specifications, standards and handbooks
2.1.2 Other Government documents, drawings and
         publications
2.2 Other publications
2.3 Order of precedence
3. DEFINITIONS
3.1 Definition of terms
3.2 Definition of acronyms
4. GENERAL REQUIREMENTS
4.1 MPA and RCM interface
4.2 RCM analysis process
4.2.1 Determining significant items
4.2.2 Failure modes and effects analysis
4.2.3 RCM decision logic
4.2.4 Default decision logic
4.2.5 Development of age exploration tasks
4.3 Kinds of preventive maintenance
4.3.1 Applicability and effectiveness of preventive
         maintenance tasks
4.3.2 Servicing and lubrication tasks
4.3.3 On-condition tasks
4.3.4 Hard time tasks
4.3.5 Combination tasks
4.3.6 Scheduled failure finding tasks
4.4 RCM for different types of equipment
4.4.1 Aircraft
4.4.2 Support equipment
4.4.3 Target/drones
4.4.4 Ordinance/Airborne equipment
5. DETAILED REQUIREMENTS
5.1 Preventive maintenance analysis process
5.1.1 Input to the preventive maintenance analysis
         process
5.1.2 Preventive maintenance analysis documentation
5.2 RCM logic documentation
5.2.1 Summary of RCM analysis
5.2.2 Failure consequence evaluation documentation
         (RCM worksheet 2, Col. 1-4)
5.2.3 Evaluation of RCM tasks
5.2.4 On-condition task evaluation
5.2.5 Scheduled hard time task evaluation
5.2.6 Evaluation of combination and failure funding
         tasks
5.2.7 Structural evaluation
5.2.8 Age exploration
5.2.9 Determination of phase inspection and
         Operating Service Period (OSP) intervals
5.3 Revisions to maintenance requirements and
       product improvement
5.3.1 Diagnostic inspection techniques
5.3.2 Design changes
5.4 Auditing the RCM analysis
6. NOTES
6.1 Intended use
6.2 Data requirements
6.3 Subject term (key word) listing
6.4 Changes from previous issue
Figures
1. Maintenance planning and analysis
2. RCM analysis process
3. FSI/SSI Selection diagram for RCM
4. Functional breakdown
5. RCM decision diagram for FSIs
6. RCM decision diagram for SSIs
7. Default decision logic chart
8. Applicability and effectiveness criteria summary
9. Preventive maintenance analysis process
10. Decision diagram for cost effectiveness
11. On-condition task determination
12. Initial calibration internal
13. Applicability criteria for hard time tasks
14. Applicability and effectiveness criteria for SSIs
15. Age exploration decision diagram
16. Decision diagram for evaluating the necessity
      or desirability of initiating design changes
17. Z-9Z NLG Assembly
18. Catapulting system functional block diagram
19. LSA Candidate List Z-9Z Assembly
20-25. Catapult launch subsystem FMECA/MI
26-29. RCM Worksheet No.1 Summary data
30-32. RCM Worksheet 2 Failure Consequence/Servicing/
        Lubrication Task Evaluation
33-35. RCM Worksheet 3 On-condition Task Evaluation
36. RCM Worksheet 4 Hard Time Task Evaluation
37. RCM Worksheet 5 Combination/Failure Finding
38-40. RCM Worksheet 6 SSI Task Evaluation
41-43. RCM Worksheet 7 Determinaton of Age Exploration
        Tasks
44. Conditional Probability of Failure Curve for
      Launch Bar Actuating Cylinder
45. Functional Block Diagram Wheel Brake Assembly
46. Z-9Z MLG Brake
47-49. Failure Mode and Criticality Analysis
        Maintainability Information
50-51. Summary Data - RCM Worksheet 1
52. Failure Consequence/Servicing/Lubrication Task
      Evaluation - RCM Worksheet 2
53-55. On-condition Task Evaluation RCM Worksheet 3
56-58. Determination of Age Exploration Task RCM
        Worksheet 7
59. Test Chamber
60. Functional Block Diagram Test Chamber Assembly
61-62. Hyrdaulic Component Test Stand FMECA/MI
63. RCM Worksheet No.1 Summary Data
64-65. RCM Worksheet No.2 Failure Consequence/Servicing
        Lubrication Task Evaluation
66-67. RCM Worksheet No.3 On-condition Task Evaluation
68. RCM Worksheet No.4 Hard Time Task Evaluation
69. RCM Worksheet No.5 Combination/Failure Finding
      Task Evaluation
70. RCM Worksheet No.7 Determination of Age Exploration
      Tasks
71. OSP Logic Diagram
72. OSP Logic Evaluation - OSP Worksheet 1
73. OSP Logic Evaluation - OSP Worksheet 2
74. OSP Logic Evaluation - OSP Worksheet 3
75. Stray Task Adjustment/Alternative - OSP Worksheet 4
76-79. OSP Logic Evaluation Summary - OSP Worksheet 1
80-82. OSP Calculation - OSP Worksheet 2
83. OSP Evaluation Graph - Worksheet 3
84. Stray Task Adjustment/Alternative - OSP Worksheet 4
85. Summary Data - RCM Worksheet 1
86. Failure consequence/Servicing/Lubrication Task
      Evaluation - RCM Worksheet 2
87. On-condition Task Evaluation - RCM Worksheet 3
88. Hard Time Task Evaluation - RCM Worksheet 4
89. Combination/Failure Finding Task Evaluation -
      RCM Worksheet 5
90. SSI Task Evaluation - RCM Worksheet 6
91. Determination of Age Exploration Task - RCM
      Worksheet 7
TABLES
I. RCM worksheet reference list
II. RCM consequences determination
III. Cost effectiveness determination
IV. Structural rating factors
V. Age exploration task/category determination
APPENDICES
A. Examples of the RCM Logic process
10. General
20. Referenced documents
30. Definitions
40. General requirements
50. Detail requirements
B. Determination of inspection intervals and
      formulation of inspection packages for O and I
      level maintenance
10. General
20. Referenced documents
30. Definitions
40. General requirements
50. Detail requirements
C. Determination of operating service periods
10. General
20. Referenced documents
30. Definitions
40. General requirements
50. Detail requirements
D. RCM Worksheets
10. General
20. Referenced documents
30. Definitions
40. General requirements
50. Detail requirements
E. Auditing RCM analyses
10. General
20. Referenced documents
30. Definitions
40. General requirements
50. Detail requirements
F. Application and tailoring guide
10. General
20. Referenced documents
30. Definitions
40. General requirements
50. Detailed requirements

Outlines methods for Reliability-Centered Maintenance analysis for Naval Aircraft, weapons systems, and support equipment. Coverage includes referenced documents, definitions, functional breakdown, hard time tasks, safe life limits, determining failure consequences, power plants, combination tasks, significant item selection, an evaluation of proposed tasks, and servicing and lubrication tasks.