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Risk Assessment Method to Support Modification of Airfield Separation Standards (2011) / Chapter Skim
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Pages 13-16

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From page 13...
... location, mistake in performance calculation, or flight control anomalies • Loss of directional control, which is generally associated with – Mechanical anomalies (30 percent of cases) – Contaminated runways – Crosswind The major contributing factors for landing excursions include the following: • Human errors and neglect of standard operating procedures such as – Landing long and/or fast during unstabilized approaches – Failing to go around despite unstabilized approach – Other pilot's errors, such as hard landing • Mechanical problems leading to the following: – Spontaneous collapse of the landing gear – Asymmetric forces due to thrust reverse or braking problems • Environmental factors such as the following: – Crosswind and tailwind conditions – Runway surface under wet or contaminated conditions Information on runway, taxiway, and taxilane events was not readily available to use in this study.
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From page 14...
... The data on U.S. incidents and accidents were used as a sample to develop the frequency models for runway veer-offs only.
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From page 15...
... and the aircraft runway distance required for the operation. The runway distance available was gathered for each accident, incident, and normal operation based on airport data.
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From page 16...
... Taxiway and Taxilane Deviation Modeling Initially, the approach for modeling taxiway deviations was a two-part model composed of a frequency model and a location model. Taxiway veer-off incident data were collected to C H A P T E R 4 Methodology Approach
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Key Terms

  • runway surface
  • location model
  • runway distance
  • distance required
  • parallel taxiway

  • acrp report
  • taxilane incidents
  • frequency models
  • parallel taxilane
  • modeling taxiway

  • aircraft lateral
  • airborne phase
  • located inside
  • deviations occurred
  • incidents occurring

  • frequency model


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