Supplementary Information

Some other information may also be included in reports, particularly with regard to runway conditions:

•Standing water, e.g. damp, wet, water patches or flooded. Snow, slush, ice.

•Braking action - given for touchdown zone, midpoint, stop end (see table below).

•Other runway surface conditions (e.g. threshold displaced 1000 ft due to work in progress).

•Obstructions.

•Wind shear warnings etc.

For example:

“Oxford 94, braking action medium due to heavy rain”

“Oxford 94”

Braking Action Code

From data collected from operations on compacted snow and ice, an assessment table has been produced to relate a measured braking coefficient to an estimated braking action and hence to a simple code for braking action. It must be borne in mind that the description “good” is a comparative value and is intended to mean that aeroplanes should not experience directional control or braking difficulties when landing, but conditions would not be as good as on a clean, dry, runway.

The measured coefficient may be reported as a 2 digit code without the decimal.

Weather Information 4