Research Projects

Development of an Approach to Update FAA/ICAO Collision Risk Model

Develop a new collision risk model and tool to estimate the risk of aircraft collisions with obstacles during the final approach to landing.

Background (Describe the current situation or problem in the industry, and how your idea would address it.)

The original Collision Risk Model (CRM) software tool used to assess the risk of an aircraft on final approach for landing colliding with an obstacle on the final approach course was developed in the 1970s with aircraft trajectory data gathered during the 1960s. The CRM tool is still used by most countries, including the U.S., to estimate the risk of aircraft collision during precision instrument approaches under Cat I and CAT II. The aircraft operated by air carriers in the 1960s are no longer in service. The performance of today's passenger aircraft is improved greatly, with design advances not only implemented to improve aircraft performance and fuel efficiency, but to reduce noise and improve flight safety. The improvement include avionics advances and navigation technologies that provide drastically improved accuracy. With these advances, new types of approaches are being developed and put into practice. With all of these changes, an updated tool based on multiliterate data of aircraft paths will support better collision risk estimates, and eventually will help the FAA validate and improve current Part 77 surfaces.
The objective of this research will be to develop new aircraft approach collision models and a revised tool based on multiliteration data to assess risk of collision with obstacles under visual and instrument approach conditions, and for various categories of aircraft and approach procedures.

Objective (What is the desired product or result that will help the airport industry?)

A report and accompanying guidebook that identifies the metrics to develop approach collision models and a revised tool based on multiliteration data to assess risk of collision with obstacles under visual and instrument approach conditions, and for various categories of aircraft and approach procedures.

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Idea No. 366