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Pages 39-49

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From page 39...
... 39 Models to Assess Quantitative and Qualitative Impacts of TFRs 4.1 Impact of Restrictions on Flight Counts One way to directly measure the impact of TFRs with long duration (roughly 12 hours or longer) is by estimating the number of flights that did not operate while the TFR was in place.
From page 40...
... 40 Understanding Impacts to Airports From Temporary Flight Restrictions The two airports inside the TFR's inner ring are Somerset (SMQ) and Solberg-Hunterdon (N51)
From page 41...
... Models to Assess Quantitative and Qualitative Impacts of TFRs 41 observed at the smaller airports in the inner ring of the TFR. However, the general manager of the FBO at Morristown estimates they lose about 20 flights per TFR, i.e., pilots that were going to fly but delayed, relocated, or canceled their trip.
From page 42...
... Figure 20. TFR map for President's Phoenix trip, Oct.
From page 43...
... Models to Assess Quantitative and Qualitative Impacts of TFRs 43 For airports located in the inner core (10-nm radius) of one of the TFRs, the impact was greater.
From page 44...
... 44 Understanding Impacts to Airports From Temporary Flight Restrictions Table 10 shows the airports affected by the Las Vegas TFR (see map in Figure 22) and the time spent in the inner core and outer ring areas, along with flight counts during those times and during the same time periods in adjacent weeks.
From page 45...
... Airport name Time in inner core (hrs) Number of operations during TFR inner core Avg.
From page 46...
... 46 Understanding Impacts to Airports From Temporary Flight Restrictions and during the same time periods in adjacent weeks. Timmerman (MWC)
From page 47...
... Models to Assess Quantitative and Qualitative Impacts of TFRs 47 gather input parameters that specify the type of airport or business being affected and the nature of the airspace restriction. Then, drawing on the compiled data and case studies and the created parametric relationships, the tool provides a best or most likely estimate for quantitative impacts, along with extreme values (upper and lower bounds)
From page 48...
... 48 Understanding Impacts to Airports From Temporary Flight Restrictions The remaining factors all pertain to TFRs, further defining the nature of the restriction. • The TFR has two concentric rings, with different rules for each.
From page 49...
... Models to Assess Quantitative and Qualitative Impacts of TFRs 49 A list of possible qualitative impacts is also displayed. For example: • No impact.

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