Page 110 - Global Project Management Handbook

TOTAL LIFE-CYCLE SYSTEM MANAGEMENT 4-17

TABLE 4.9 Measurable Supportability Goals, Thresholds, and Objectives
Maintenance
• Mean time between failure (MTBF)
• Mean time to repair (MTTR)
• Mean restoration time (MRT)
• Mean active maintennce time (MAMT)
• Max time to repair (MAX TTR)
• Repair cycle time
• Annual maintenance man-hours
• O&S cost per operating hour
• Maintenance downtime
• Waiting time—NMCM (non-mission-capable maintenance)
Manpower and personnel
• Crew performance
• Maintenance cost per operating hour
• Skill-level limit
• Maintenance hours by person
• Personnel costs as percent of O&S costs
Technical data
• Technical document accuracy
• TM correction rate
Supply support
• Spares availability
• Backorder rate
• Backorder duration
• Failure factor accuracy
• Order-ship time
• Spares costs to TLC ratio
Support eqipment and testing
• On-system diagnostics
• Operational support equipment
• Diagnostics effectiveness
• Tools effectiveness
• Support equipment availability
Facilities
• Facility utilization rate
• Facilities cost as percent of LCC
Training
• Time to achieve proficiency
• Training costs per student
• Maintenance-induced error rate
• Training equipment availability

team with the detailed information required to identify and quantify specific problems
so that they can be resolved expeditiously and effectively.
The TLCSM process is a continuous evaluation and assessment of the system success
through its life cycle. As issues are identified that might improve the performance of the
system, improve support of the system, or lower cost of ownership, the project team should
initiate the actions necessary to incorporate these as efficiently as possible. Figure 4.18
illustrates this process of continuous improvement. Typically, the company management
that established the project team will require periodic updates on the status of the system to
achieve and maintain the desired levels of O E and A O while not exceeding the C O baseline.