TRB's Airport Cooperative Research Program (ACRP) Report 51: Risk Assessment Method to Support Modification of Airfield Separation Standards is intended to be used to support requests for modification of standards in those circumstances where the design criteria for separations between taxiways/taxilanes and other taxiways/taxilanes and fixed or movable objects as well as separations between taxiways and runways cannot be met.
The following appendices, included in the pdf and print version of the report, will be helpful in understanding the methodology.
Other report appendices, which are available online only, provide detail and information on the development of the methodology.
In addition, the project developed a PowerPoint presentation that may be useful for introducing and explaining the methodology to stakeholders.
Table of Contents
|Major Challenges Associated with Airfield Separations||2-2|
|FAA Modification of Standards||3-3|
|Veer-Off Accidents and Incidents||12-12|
|Aircraft Veer-Off Database Organization||13-13|
|Normal Operations Data (NOD)||14-14|
|Taxiway and Taxilane Deviation Modeling||16-20|
|Runway Deviation Modeling||21-27|
|Methodology Applied to MOS Cases||28-30|
|Recommendations for Future Work||32-33|
|Glossary of Acronyms||34-35|
|Appendix A - Risk Assessment Methodology||39-78|
|Appendix B - Collision Risk Model||79-79|
|Appendix C - Key Studies on Aircraft Deviation||80-80|
|Appendix D - List of Veer-Off Accidents and Incidents||81-81|
|Appendix E - Sample of Normal Operations Data||82-82|
|Appendix F - Aircraft Database Summary||83-91|
|Appendix G - Summary of FAA/Boeing Taxiway Deviation Studies||92-92|
|Appendix H - Analysis of MOS Cases||93-121|
|Abbreviations used without definitions in TRB publications||122-122|