TERPS 201

摘要

Last month, we gave you a survey course on what happens behind the scenes of approach procedures ("TERPS 101"). That's a prerequisite for this course, since we're going to build on what was covered in that article to examine the nuts and bolts of other types of procedures. In case you didn't complete the prerequisite, let's quickly go over what you need to know. Instrument procedures are developed according to a set of rules that guarantee an acceptable level of safety to pilots. These rules are colloquially known as TERPS, and provide, among other things, mathematical definitions of areas that must be evaluated for obstacles (known as Obstacle Evaluation Areas, or OEAs) and how much obstacle protection should be provided (known as Required Obstacle Clearance, or ROC) within those areas.