Stator Vane,
There are different versions of the Boeing QRH depending on the certification authority, hence my question. As FSB are conducting the training for Korean, I guess that you are operating under the FAA system! The CAA and FAA treat runway contamination differently, I’m only familiar with the FAA system.
The wedge idea is the genuine article, it is explained in detail by Boeing, unfortunately I don’t have their manuals at home with me.
As for the Flaps, check out FAR 25.335 (e)(3) regarding structural loading, the ruling allows for bands between 0-20,000 feet and 20,000 – 50,000 feet. Therefore the flaps are tested in the lower band, the manufacturers then set this as a limitation and wont bother testing above that level due to the costs involved.
Mutt.