Step 5 – Notice that this chart can be used for airports whose mean daily maximum
temperature of the hottest month at the airport is equal to or less than 86 F (30 C). Since
the given temperature for this example is 40.2C (104.36F) is not within this range, a
temperature correction is needed.
Step 6 – To adjust the runway length: add 1% of length for every 1 C above the SDT.
% Correction = 0.01*(40.2-15) = 25.2%
Recommended length = 9,500 + (0.252*9,500) = 11,849ft
Note: Round lengths of 30 feet and over to the next 100-foot interval. Thus, the takeoff
length for design is 11,900 feet.
The takeoff field length is 11,900 feet (3,600m).
Summary:
Table 7 - 2 Runway Length Summary
Max. Landing Design Weight 870,826 pounds
Max. Takeoff Design Weight 1,267,658 pounds
Landing Field Length 7,300 feet
Takeoff Field Length 11,900 feet
Select the longest length for airport design. In this case, the takeoff length of 11,900
feet (3.6 Km) is the recommended runway length.