Operational Errors/Deviations
Pilot Deviations 29% 55%

4.3 FY 2008 Performance Results
Direct comparison with prior years’ data is not possible, as the new ICAO definition of Runway Incursion and Severity Classification (see Appendix D) went into effect at the start of FY 2008. To summarize the changes made by the new definition, some events that were classified as Surface Incidents before FY 2008 are now Category D Runway Incursions and events that were Category D Runway Incursions are now included in Category C. The impact is to greatly increase total recognized runway incursions in these bottom two categories. The rationale for this change is that with more data we can more easily identify root causes.
Frequency of Runway Incursions
For FY 2008, there were about 58.4 million operations (approximately 160,000 per day) at FAA-towered airports in the United States. Of these operations, there were 1,009 runway incursions – an average of one runway incursion per 58,000 operations during the 12-month period.
Severity of Runway Incursions

During this period, 25 of the 1,009 incursions (2.5 percent) were Category A and B incursions. The majority (97.5 percent) of runway incursions (984 of 1,009) were Category C and D events involving little or no risk of collision. The total rate of (Category A and B) runway incursions is 0.43 incursions per million operations, which is below the target rate of 0.45 incursions per million operations by FY 2010 in the FAA Flight Plan 2008 – 2012.
Types of Runway Incursions

The majority of runway incursions (63 percent or 637 of 1,009 incursions) during the period were pilot deviations. Operational errors/deviations were the lowest fraction at 16 percent (165 of 1,009) of incursions; vehicle/pedestrian deviations accounted for 21 percent (207 of 1,009). (See Figure 2)
Figure 2. Runway Incursions by Type, FY 2008

4.4 Performance Targets

Under the goal of “Increased Safety, Objective 3, Reduce the risk of runway incursions,” the FAA Flight Plan 2009 – 2013 contains the following performance target:
“By the end of FY 2013, reduce total runway incursions by 10 percent from the FY 2008 baseline.”
The table below shows total runway incursions allocated by line of business for the baseline year and target maximums for the succeeding years.
Table 2. Runway Incursion Performance Targets
LOB  FY 2008 Baseline  FY 2009 Baseline -1%  FY 2010 Baseline -3%  FY 2011 Baseline -5%  FY 2012 Baseline -7%  FY 2013 Baseline -10% 
ATO  165  163  160  157  154  149 
AVS  648  642  629  616  603  583 
ARP  196  194  190  186  182  176 
　
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本文鏈接地址：National Runway Safety Plan 2009-2011(7)