Originally Posted by underfire
What is the reference for 15% slope for obstacle clearance?
These rules are from the most respected rules around the world, aswell civilian as military. The mandatory rules are, Country by Country, codified on the base of that document [PDF] ICAO Doc 8168 - Vol 2 - PANS OPS Approach ... - Code7700 code7700.com/.../icao_doc_8168_vol2.p... Aircraft Operations. This edition incorporates all amendments approved by the Council prior to 3 October ...
The French Civilian document is published by SIA (Service de l' Information Aeronautique) depending of DGAC in the document known as PRO-MIN. (The two pages are non updated extracts)