Page 228 - Planning and Design of Airports

Geometric Design of the Airfield 193

Airport Elevation
(feet)
95 Percent of Fleet 100 Percent of Fleet
10000
Example:
9000
Temperature (mean day max hot 9000
month): 59°F (15°C) 8000 8000 9000
Airport Elevation: Mean Sea
Level
7000
Note: Dashed lines shown in the table 7000
are mid values of adjacent solid lines. 8000
Recommended Runway Length:
6000 6000 7000
For 95% = 2,700 feet (823 m)
For 100% = 3,200 feet (975 m)
5000 5000 6000 RUNWAY LENGTH (FEET)

4000
4000 5000
3000
3000 2000
2000 1000 SL 4000
1000
SL
3000

2000
50 75 100 50 75 100
Mean Daily Maximum Temperature of the Hottest
Month of Year (Degrees F)
FIGURE 6-12 Small airplanes with fewer than 10 passenger seats (FAA AC
150/5325-4b).

90°F and elevation is 1000 ft AMSL. A vertical line is drawn from the
point on the horizontal axis associated with 90°F to the 1000 ft AMSL
field elevation curve. A horizontal line is drawn from the associated
point on the field elevation curve to the right side of the figure, where
the runway length is estimated. In this example, the design runway
length is estimated to be 4400 ft.

Aircraft Greater than 12,500 lb but Less than or Equal
to 60,000 lb MGTOW
For aircraft greater than 12,500 lb but less than or equal to 60,000 lb
MGTOW, the critical aircraft is located on Table 6-5 “75 percent of
fleet,” or Table 6-6, “100 percent of fleet.” Table 6-5 represents aircraft
that generally require less than 5000 ft of runway, while Table 6-6
represents aircraft that generally require 5000 ft or more of runway.