I am amazed at the lack of common sense let alone technical knowledge on the problem at Bristol Airport. From the shots of the runway it appears that
it is not level and flat, indeed it has a definate hump in the middle.
When landing even with spoilers deployed and full flap the weight of the craft is still not bearing fully on the runway for at least half its rundown, add to this the fact that if the runway falls away - ie down hill, this will further delay the full weight application, then add some water to further reduce the friction coefficient the result is skidding.
The only important criteria in braking is "weight" and the "coefficient of friction". Putting drainage slots in the surface implies that someone thinks that there is an aquaplaning issue, this cannot be the case on a runway that is downhill and is absurd when we are considering that we are talking about hundreds of tons sitting on relatively small tyre areas; it has to be the runway is not long enough and flat enough to give a good margin of error.
The CAA should get some boffins in there quick to sort it out.
