| ACO | Aircraft Certification Office |
| AD | airworthiness directive |
| AEH | airborne electronic hardware |
| AIDS | Accident and Incident Database System |
| AIR | Aircraft Certification Service |
| ASE | aviation safety engineers |
| ASIAS | Aviation Safety Information Analysis and Sharing |
| BBN | Bayesian Belief Network |
| CAFTA | Computer Aided Fault Tree Analysis System |
| CARB | Corrective Action Review Board |
| CCF | Common Cause Failure |
| CCFA | Common Cause Failure Analysis |
| COS | continued operational safety |
| CP | conditional probability |
| CRD | Crew Response Diagram |
| CSRM | Context-Based Software Risk Model |
| DAL | Development Assurance Level |
| DHS | Department of Homeland Security |
| EO | exposed occupant |
| EPD | Engine and Propeller Directorate |
| ET | Event Tree |
| FAA | Federal Aviation Administration |
| HFACS | Human Factors Analysis and Classification System |
| HFFCG | Human Factors and Flight crew Coordinating Group |
| HIRMT | Hazard Identification, Risk Management, and Tracking |
| HRA | Human Reliability Analysis |
| IDHEAS-ECA | Integrated Human Event Analysis System for Event and Condition Assessment |
| I-PRA | Integrated PRA |
| IR | injury ratio |
| IRIS | Integrated Risk Information System |
| MSAD | Monitor Safety/Analyze Data |
| NASA | National Aeronautics and Space Administration |
| ND | non-detection probability |
| NTSB | National Transportation Safety Board |
| OEM | original equipment manufacturer |
| PPoF | probabilistic physics-of-failure |
| PRA | probabilistic risk assessment |
| QMU | Quantification of Margins and Uncertainties |
| QSRM | quantitative software reliability method |
| RG | Regulatory Guide |
| ROP | Reactor Oversight Process |
| SACO | Seattle Aircraft Certification Office |
| SAPHIRE | Systems Analysis Programs for Hands-on Integrated Reliability Evaluation |
| SDRS | Service Difficulties Reporting System |
| SME | subject-matter expert |
| SMS | Safety Management System |
| SRM | Safety Risk Management |
| TARA | Transport Airplane Risk Analysis |
| TARAM | Transport Airplane Risk Assessment Methodology |
| UQ | uncertainty quantification |
| U.S. NRC | U.S. Nuclear Regulatory Commission |