Airport Engineering
Which of the following factors are taken into account for estimating the runway length required for aircraft landing?1. Normal maximum temperature2. Airport elevation3. Maximum landing weight4. Effective runway gradientSelect the correct answer using the codes given below Codes:

1,2 and 4
1,3, and 4
2 and 3
1,2,3 and 4

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Airport Engineering
Effective length of a runway is the distance between

Ends of the runway
Point of intersection of the glide path and the extended plane of the runway surface and the other end of the runway
Point of intersection of the obstruction clearance line and the extended plane of the runway surface, and the other end of the runway
Ends of the clear way on either side

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