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During this period, there were about 250 million operations – approximately 170,000 per day at FAA-towered airports in the United States. Of these operations, there were 1,353 runway incursions – an average of one runway incursion per 184,775 operations during the four-year period. The rate of runway incursions remained steady from FY 2004 through FY 2006 averaging 5.3 per million operations per year. The FAA reported 40 more incursions in FY 2007 than in FY 2006 increasing the incursion rate by 13 percent from 5.4 to 6.1 incursions per million operations.
Table 1. Number and Rate of Runway Incursions
FY 2004 FY 2005 FY 2006 FY 2007 Total
Number of Runway Incursions 326 327 330 370 1,353
Rate of Runway Incursions per Million Operations 5.2 5.2 5.4 6.1 5.5
Total Number of Operations 63,126,312 63,104,415 61,076,341 61,131,629 248,438,697
Severity of Runway Incursions
During the period, Category A and D runway incursions increased while Category B and C incursions decreased. The majority (92 percent) of runway incursions (1,241 of 1,353) were Category C and D events involving little or no risk of collision. The distribution of runway incursions showed a positive shift from more severe Category C events early in the four-year period to less severe Category D incursions later in the period.
From FY 2004 through FY 2007, 112 of the 1,353 incursions (8 percent) were Category A and B incursions. Together, these incursions increased in number and rate for the first three years of the period before decreasing in FY 2007. None of the 67 Category A incursions resulted in a collision.
The FAA met its performance targets for each of the years in the period and maintained the total rate of serious (Category A and B) runway incursions to 0.45 incursions per million operations for the overall time frame.
Types of Runway Incursions
The majority (55 percent) of runway incursions during the four-year period (FY 2004 through FY 2007) were pilot deviations. Operational errors/deviations accounted for 29 percent of incursions; vehicle/pedestrian deviations were the lowest fraction at 16 percent. (See Figure 1)
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本文链接地址:National Runway Safety Plan 2009-2011(6)