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Consider the corrections to be applied to the basic length of the runway
1. Elevation correction
2. Gradient correction
3. Temperature correction
1. Elevation correction
2. Gradient correction
3. Temperature correction
The correct order of applying the corrections to obtain runway length is
- a)1 - 2 - 3
- b)1 - 3 - 2
- c)2 - 3 - 1
- d)3 - 1 - 2
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Consider the corrections to be applied to the basic length of the runw...
ICAO recommends that the basic runway length after having been corrected for elevation, should be increased at the rate of 1% for every 1°C rise of airport reference temperature above the standard atmospheric temperature at that elevation. Further FAA recommends gradient correction at the rate of 20% for every 1% of effective gradient. After elevation and temperature correction.
So correct order is elevation correction -temperature correction-gradient correction.
So correct order is elevation correction -temperature correction-gradient correction.
Most Upvoted Answer
Consider the corrections to be applied to the basic length of the runw...
Elevation Correction:
- The elevation correction is applied to account for the difference in altitude between the runway and the standard altitude at which the runway length is calculated.
- The correction is calculated using the formula: Correction = 0.0015 x (Elevation - Standard Altitude)
- The elevation correction is always applied first as it directly affects the runway length.
Gradient Correction:
- The gradient correction is applied to account for any slope or gradient on the runway.
- The correction is calculated using the formula: Correction = Gradient x Length of the runway
- The gradient correction is applied after the elevation correction because it is affected by the actual length of the runway, which is modified by the elevation correction.
Temperature Correction:
- The temperature correction is applied to account for the effect of temperature on the runway length.
- As temperature increases, the air density decreases, resulting in a longer takeoff distance.
- The correction is calculated using the formula: Correction = Temperature x 0.00011 x Length of the runway
- The temperature correction is applied last as it depends on the actual length of the runway, which is modified by both the elevation and gradient corrections.
Correct Order of Applying Corrections:
- The correct order of applying the corrections to obtain the runway length is 1 - 3 - 2.
- The elevation correction is applied first to account for the difference in altitude.
- The temperature correction is applied last as it depends on the actual length of the runway, which is modified by both the elevation and gradient corrections.
- The gradient correction is applied in between as it is affected by the actual length of the runway, which is modified by the elevation correction.
Therefore, the correct order is 1 (Elevation correction) - 3 (Temperature correction) - 2 (Gradient correction), which corresponds to option 'B'.
- The elevation correction is applied to account for the difference in altitude between the runway and the standard altitude at which the runway length is calculated.
- The correction is calculated using the formula: Correction = 0.0015 x (Elevation - Standard Altitude)
- The elevation correction is always applied first as it directly affects the runway length.
Gradient Correction:
- The gradient correction is applied to account for any slope or gradient on the runway.
- The correction is calculated using the formula: Correction = Gradient x Length of the runway
- The gradient correction is applied after the elevation correction because it is affected by the actual length of the runway, which is modified by the elevation correction.
Temperature Correction:
- The temperature correction is applied to account for the effect of temperature on the runway length.
- As temperature increases, the air density decreases, resulting in a longer takeoff distance.
- The correction is calculated using the formula: Correction = Temperature x 0.00011 x Length of the runway
- The temperature correction is applied last as it depends on the actual length of the runway, which is modified by both the elevation and gradient corrections.
Correct Order of Applying Corrections:
- The correct order of applying the corrections to obtain the runway length is 1 - 3 - 2.
- The elevation correction is applied first to account for the difference in altitude.
- The temperature correction is applied last as it depends on the actual length of the runway, which is modified by both the elevation and gradient corrections.
- The gradient correction is applied in between as it is affected by the actual length of the runway, which is modified by the elevation correction.
Therefore, the correct order is 1 (Elevation correction) - 3 (Temperature correction) - 2 (Gradient correction), which corresponds to option 'B'.
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Consider the corrections to be applied to the basic length of the runway1. Elevation correction2. Gradient correction3. Temperature correctionThe correct order of applying the corrections to obtain runway length isa)1 -2 -3b)1 - 3 - 2c)2 - 3 - 1d)3 - 1 - 2Correct answer is option 'B'. Can you explain this answer?
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