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Refer to figure or CAP698 file 3.9.

Pressure Altitude: 3 000 ft
OAT: 0° C Landing Mass: 4250 lb
Headwind component: 10 kt
Runway condition: dry
Runway slope: 1% up

Given the following information for a Performance Class B aeroplane, what is the Landing Distance Required?

  • A
    2260 ft
  • B
    3230 ft
  • C
    2380 ft
  • D
    3400 ft
Refer to figure.
CAP 698 - Landing

a) The landing distance, from a screen height of 50 ft, must not exceed 70% of the landing distance available, i.e. a factor of 1.43.

b) If the landing surface is grass up to 20 cm long on firm soil, the landing distance should be multiplied by a factor of 1.15.

c) If the METAR or TAF or combination of both indicate that the runway may be wet at the estimated time of arrival, the landing distance should be multiplied by a factor of 1.15.

d) The landing distance should be increased by 5% for each 1% downslope. No allowance is permitted for upslope.

e) The despatch rules for scheduled (planned) landing calculations are in JAR - OPS 1.550 (c).

Graphical Distance 2 350 ft
Surface Factor x 1.0
Slope Factor x 1.0
Condition Correction Factor x 1.0
Regulatory Factor x 1.43
Landing Distance Required = 3 360ft

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