Page 77 - GEN-radio 2025 - færdig_Neat

- Visibility is 10 km or more
- No cloud below 1500m (5,000 ft) or below MSA (minimum sector altitude)

whichever is greater and no cumulonimbus (CB)

- No significant weather i.e no precipitation, thunderstorm, shallow fog or
low drifting snow

Note: Surface wind is not included

10.2 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, Mid-Point, Stop End.

(see table below)

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

- Obstructions.

- Wind Shear warnings etc.

10.2.1 Braking Action Code

From data collected from operations on compacted snow and ice, an assessment
table has been produced to relate to a measured braking co-efficient 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 co-efficient may be reported as a 2 digit code without the decimal.

Measured Co- Estimated Code
efficient Braking Action

0.40 and above Good 5

GEN radio 2025 - Midtjysk Flyveskole 77