Question

As per the International Civil Aviation Organization (ICAO), the basic runway length is increased by \( x \) (\%) for every \( y \) (m) raise in elevation from the Mean Sea Level (MSL). The values of \( x \) and \( y \), respectively, are

• A. 7\% and 300 m
• B. 5\% and 200 m
• C. 4\% and 500 m
• D. 10\% and 1000 m

Hint:

In aviation design, adjustments to runway length due to elevation changes are crucial to ensure adequate takeoff and landing distances at different altitudes.

Answer 1

The Correct Option is A

Step 1: According to the ICAO standards, the basic runway length should be adjusted to account for elevation changes above mean sea level. The standard correction factor specified by ICAO is: \[ \text{Runway length increase} = 7\% \text{ for every } 300 \text{ meters rise in elevation.} \] Step 2: This adjustment accounts for the reduced air density at higher elevations, which affects aircraft performance, requiring a longer runway for safe takeoff and landing. Step 3: Reviewing the given options, the correct values aligning with ICAO guidelines are: \[ x = 7\% \quad \text{and} \quad y = 300 \text{ m} \] Conclusion: The correct answer is option (A), which states \( 7\% \) increase for every \( 300 \) m elevation rise.