Abbreviations
AI—Inherent Availability
AO —Operational Availability
AoA—Analysis of Alternatives
AFMETCAL—Air Force Metrology and Calibration Program
ARC—Air Reserve Component
APB—Acquisition Program Baseline
ATE—Automatic Test Equipment
BCS —Baseline Comparison System
BIST—Built-In Self-Test
BIT—Built-In Test
BITE—Built-In Test Equipment
BIT/FD —Built-In-Test Fault Detection
CA—Criticality Analysis
CALS —Continuous Acquisition and Life-Cycle Support
CDR—Continuous Acquisition and Life-Cycle Support
CFE —Contractor Furnished Equipment or Customer Furnished Equipment
CFI —Critical Faults Identified
CM—Corrective Maintenance
CM—Configuration Management
CND—Can Not Duplicate
COMR—Communications Reliability
CONOPS —Concept of Operations
COTS—Commercial Off-the-Shelf
CPIN —Computer Program Identification Number
DO—Operational Dependability
DFT—Design for Test
DISN —Defense Information Switch Network
DRMP—Design Reference Mission Profile
DOC—Designated Operational Capability
DoD—United States Department of Defense
DT&E —Developmental Test and Evaluation
ESRT—Essential System Repair Time
FA—False Alarm
FAP—Functional Area Plan
EC—Enterprise Commander
ECP—Engineering Change Proposal
FD—Fault Detection
FHA—Functional Hazard Analysis
FI —Fault Isolation
FMC—Fully Mission Capable
FFMEA—Functional Failure Mode Effects Analysis
FMEA —Failure Mode Effects Analysis
FMECA —Failure Mode Effects and Criticality Analysis
FR—Fault Resolution
FRACAS —Failure Reporting and Corrective Action System
FSL—Full System List
HM—Health Management
ICBM —Intercontinental Ballistic Missile
ID—Integrated Diagnostics
IETM—Interactive Electronic Technical Manual
IFR—In-flight Reliability
ILS—Integrated Logistics Support
IMPACTS—Integrated Manpower, Personnel, and Comprehensive Training and Safety
IRSP—In-Place Readiness Spares
ISO—International Standards Organization
IVHM—Integrated Vehicle Health Management
JCALS—Joint Computer-Aided Acquisition and Logistics Support
LR—Launch Reliability
LRM—Line Replaceable Module
LRU—Line Replaceable Unit
LSA—Logistics Support Analysis
LSAR —LSA Record
MAJCO—MMajor Command
MAP—Mission Area Plan
MBR—Model Based Reasoner
MC —Mission Capable
MCMT—Mean Corrective Maintenance Time
MDT—Mean Downtime
MEFL—Mission Essential Functions List
MESL—Minimum-Essential Subsystem List
MLH/AH—Maintenance Labor Hours per Active Hour
MMH/FH—Maintenance Man-Hours per Flying Hour
MMH/LU—Maintenance Man-Hours per Life Unit
MMH/PH—Maintenance Man-Hours per Possessed Hours
MMT—Mean Maintenance Time
MMY/L—Maintenance Man Years per Launch
MNS—Mission Needs Statement
MP—Mission Profile
MP/U—Maintenance Personnel per Operational Unit
MR—Maintenance Ratio
MRS—Mobility Requirements Study
MRSP—Mobility Readiness Spares Package
MRT—Mean Repair Time
MSMT—Mean Scheduled Maintenance Time
MTBCF —Mean Time Between Critical Failure
MTBDE—Mean Time Between Downing Event
MTBF—Mean Time Between Failures
MTBM—Mean Time Between Maintenance
MTBMA—Mean Time Between Maintenance Actions
MTBPM—Mean Time Between Preventative Maintenance
MTBR —Mean Time Between Removal
MTBUM—Mean Time Between Unscheduled Maintenance
MTBSM—Mean Time Between Scheduled Maintenance
MTD—Maintenance Training Device
MTTF—Mean Time To Failure
MTTR —Mean Time To Repair
MTTRF—Mean Time To Restore Function
MTTRS—Mean Time To Restore System
NMC—Not Mission Capable
NMCB—Not Mission Capable Both
NMCM—Not Mission Capable Maintenance
NMCMU—Not Mission Capable Maintenance Unscheduled
NMCS—Not Mission Capable Supply
O&S—Operating & Support
OMS —Operational Mission Summary
ORD—Operational Requirements Document
OT&E—Operational Test and Evaluation
PDR—Preliminary Design Review
PH —Possessed Hours
PHM—Prognostic Health Management
PM —Preventive Maintenance
PMC—Partially Mission Capable
PMEL—Precision Measurement Equipment Laboratory
PSMP—Product Support Management Plan
R&M—Reliability & Maintainability
RAA —Required Asset Availability
RAM—Reliability, Availability, and Maintainability
RAMS—Reliability, Availability, Maintainability, and Supportability
RBD—Reliability Block Diagram
RM&D —Reliability, Maintainability, and Deployability
RSP—Readiness Spares Package
R&D—Research and Development
Rm—Mission Reliability
RSR—Re-Entry System Reliability
RTOC—Reduction Total Ownership Costs
RTOK—Retest OK
SAR—Strategic Alert Reliability
SE—Support Equipment/System Engineering
SFE—Supplier Furnished Equipment
SHM—System Health Management
SIL—Software Integration Lab
SLA—Service Level Agreement
SM—Single Manager
SORAP—Source of Repair Assignment Process
SOW—Statement of Work
SPF—Single Point Failure
SPFM—Single Point Failure Mode
SRU—Shop Replaceable Unit
STT—Strategy-To-Task
T&E—Test and Evaluation
TCTO —Time Compliance Technical Order
TO—Technical Order
TPS—Test Program Set
TRD—Test Requirements Document
UTE —Utilization
UR—Utilization Rate (as used in formulas)
UTR—Uptime Ratio
UUT—Unit Under Test
VHM —Vehicle Health Management
WSR —Weapon System Reliability
WUC—Work Unit Code