Foreword
1 Scope
2 Fundamental terms and definitions
   2.1 Maintenance
   2.2 Maintenance Management
   2.3 Maintenance objectives
   2.4 Maintenance strategy
   2.5 Maintenance plan
   2.6 Required function
   2.7 Dependability
   2.8 Maintenance supportability
   2.9 Operation
3 Item related terms
   3.1 Item
   3.2 Asset (physical)
   3.3 Repairable item
   3.4 Consumable item
   3.5 Spare part
   3.6 Insurance spare part
   3.7 Indenture level
   3.8 Software
   3.9 Firmware
4 Properties of items
   4.1 Availability
   4.2 Reliability
   4.3 Intrinsic (inherent) Reliability
   4.4 Maintainability
   4.5 Intrinsic (inherent) Maintainability
   4.6 Conformity
   4.7 Durability
   4.8 Redundancy
   4.9 Active redundancy
   4.10 Standby redundancy
   4.11 Useful life
   4.12 Mean failure rate
   4.13 Life cycle
   4.14 Obsolescence (for maintenance purposes)
5 Failures and events
   5.1 Failure
   5.2 Failure mode
   5.3 Failure cause
   5.4 Wear-out-failure
   5.5 Ageing failure
   5.6 Degradation
   5.7 Common cause failure
   5.8 Primary failure
   5.9 Secondary failure
   5.10 Sudden failure
   5.11 Failure mechanism
   5.12 Severity
   5.13 Criticality
   5.14 Failure criteria
   5.15 Hidden failure
6 Faults and states
   6.1 Fault
   6.2 Fault masking
   6.3 Latent fault
   6.4 Partial fault
   6.5 Up state
   6.6 Degraded state
   6.7 Down state
   6.8 Disabled state
   6.9 External disabled state
   6.10 Operating state
   6.11 Idle state
   6.12 Standby state
   6.13 Hazardous state
   6.14 Shut-down
   6.15 Software fault
7 Maintenance types
   7.1 Preventive maintenance
   7.2 Scheduled maintenance
   7.3 Predetermined maintenance
   7.4 Condition based maintenance
   7.5 Corrective maintenance
   7.6 Remote maintenance
   7.7 Deferred corrective maintenance
   7.8 Immediate corrective maintenance
   7.9 On line maintenance
   7.10 On site maintenance
   7.11 Operator maintenance
   7.12 Maintenance level
   7.13 Maintenance outsourcing
8 Maintenance activities
   8.1 Inspection
   8.2 Condition Monitoring
   8.3 Compliance test
   8.4 Function check-out
   8.5 Simple maintenance
   8.6 Overhaul
   8.7 Fault diagnosis
   8.8 Fault localization
   8.9 Repair
   8.10 Temporary repair
   8.11 Improvement (of an item)
   8.12 Modification
   8.13 Rebuilding
   8.14 Maintenance task preparation
   8.15 Scheduling
   8.16 Restoration
9 Time related term
   9.1 Up time
   9.2 Down time
   9.3 Operating time
   9.4 Required time
   9.5 Standby time
   9.6 Idle time
   9.7 Maintenance time
   9.8 Preventive maintenance time
   9.9 Corrective maintenance time
   9.10 Active maintenance time
   9.11 Repair time
   9.12 Active preventive maintenance task time
   9.13 Logistic delay
   9.14 Technical delay
   9.15 Operating Time to failure
   9.16 Time between failures
   9.17 Operating time between failures
   9.18 External disabled time
   9.19 Time to restoration
   9.20 Wear-out failure period
   9.21 Constant failure period
   9.22 Early failure period
10 Maintenance support and tools
   10.1 Maintenance support
   10.2 Line of maintenance
   10.3 Failure analysis
   10.4 Item register
   10.5 Maintenance record
11 Economic and technical factors
   11.1 Life cycle cost
   11.2 Maintenance task effectiveness
   11.3 Mean operating time between failures
   11.4 Mean time between failures
   11.5 Mean repair time
   11.6 Mean time to restoration
Annex A (informative) - Maintenance - Overall view
Annex B (informative) - States of an item
Annex C (informative) - Times
Annex D (informative) - Maintenance Times
Annex E (informative) - Criticality matrix
Annex F (informative) - Identification of significant technical
        changes between this standard and the previous
        edition (EN 13306:2001)