Research Article
A Least-Square Model to Estimate Historical Percentages of Itinerant General Aviation Operations by Aircraft Types and Flight Rules at an Airport
Table 7
Observed and estimated percentages of IFR operations at the four airports.
| | HOU | Piston | Turboprop | Turbofan | | Observed | Estimated | Observed | Estimated | Observed | Estimated |
| | 2004 | 16.56% | 9.73% | 18.88% | 26.92% | 64.56% | 63.35% | | 2005 | 17.15% | 10.2% | 21.54% | 27.19% | 61.31% | 62.61% | | 2006 | 11.96% | 10.63% | 24.85% | 27.44% | 63.2% | 61.93% | | 2007 | 10.14% | 10.41% | 23.06% | 27.31% | 66.8% | 62.28% | | 2008 | 10.64% | 9.72% | 22.86% | 27.82% | 66.5% | 62.46% | | 2009 | 11.7% | 9.77% | 24.63% | 27.96% | 63.67% | 62.27% | | 2010 | 10.78% | 9.9% | 25.22% | 27.02% | 64% | 63.08% | | 2011 | 8.22% | 10.76% | 20.72% | 27.51% | 71.06% | 61.72% | | 2012 | 9.5% | 11.26% | 21.45% | 27.8% | 69.05% | 60.94% | | A significant difference is detected by dependent -test | No | Yes | No |
| | PDK | Piston | Turboprop | Turbofan | | Observed | Estimated | Observed | Estimated | Observed | Estimated |
| | 2004 | 31.74% | 37.97% | 21.44% | 18.94% | 46.82% | 43.09% | | 2005 | 35.43% | 37.23% | 20.87% | 19.4% | 43.7% | 43.37% | | 2006 | 34.4% | 37.72% | 20.85% | 19.09% | 44.75% | 43.19% | | 2007 | 28.61% | 38.37% | 23.84% | 18.7% | 47.55% | 42.93% | | 2008 | 32.24% | 38.63% | 22.56% | 18.55% | 45.2% | 42.82% | | 2009 | 30.42% | 38.15% | 24.02% | 18.83% | 45.56% | 43.02% | | 2010 | 31.08% | 38.88% | 23.64% | 18.4% | 45.28% | 42.72% | | 2011 | 27.27% | 39.73% | 27.01% | 19.33% | 45.73% | 40.94% | | 2012 | 30.23% | 39.54% | 21.79% | 18.09% | 47.97% | 42.37% | | A significant difference is detected by dependent -test | Yes | Yes | Yes |
| | DTS | Piston | Turboprop | Turbofan | | Observed | Estimated | Observed | Estimated | Observed | Estimated |
| | 2004 | 46.02% | 46.56% | 25.82% | 24.72% | 28.16% | 28.72% | | 2005 | 44.64% | 46.22% | 26.96% | 24.87% | 28.4% | 28.9% | | 2006 | 40.78% | 46.97% | 30.29% | 24.53% | 28.93% | 28.51% | | 2007 | 47.71% | 46.42% | 27.18% | 24.78% | 25.1% | 28.8% | | 2008 | 49.65% | 43.13% | 28.64% | 26.32% | 21.71% | 30.56% | | 2009 | 53.07% | 43.26% | 28.5% | 26.26% | 18.43% | 30.49% | | 2010 | 53.63% | 43.41% | 26.49% | 26.18% | 19.87% | 30.41% | | 2011 | 52.88% | 45.98% | 25.13% | 24.99% | 21.99% | 29.04% | | 2012 | 49.94% | 45.99% | 24.63% | 24.98% | 25.42% | 29.03% | | A significant difference is detected by dependent -test | No | No | No |
| | SSI | Piston | Turboprop | Turbofan | | Observed | Estimated | Observed | Estimated | Observed | Estimated |
| | 2004 | 45.29% | 57.9% | 24.85% | 19.47% | 29.86% | 22.63% | | 2005 | 57.22% | 57.73% | 17.59% | 19.55% | 25.19% | 22.72% | | 2006 | 48.55% | 57.72% | 20.75% | 19.55% | 30.71% | 22.73% | | 2007 | 48.77% | 54.31% | 25.06% | 21.13% | 26.17% | 24.56% | | 2008 | 44.59% | 49.64% | 28.14% | 23.29% | 27.27% | 27.07% | | 2009 | 56.98% | 53.85% | 19.77% | 21.34% | 23.26% | 24.81% | | 2010 | 52.38% | 53.34% | 20.24% | 21.58% | 27.38% | 25.09% | | 2011 | 42.11% | 52.91% | 23.16% | 21.77% | 34.74% | 25.31% | | 2012 | 47.69% | 53.22% | 20% | 21.63% | 32.31% | 25.15% | | A significant difference is detected by dependent -test | No | No | No |
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