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.
TERPS 201
Last month, we gave you a survey course on what happens behind the scenes of approach procedures (TERPS 101). Thats a prerequisite for this course, since were going to build on what was covered in that article to examine the nuts and bolts of other types of procedures. In case you didnt complete the prerequisite, lets quickly go over what you need to know.
Key Takeaways:
- TERPS (Terminal Instrument Procedures) establish rules defining Obstacle Evaluation Areas (OEAs) and Required Obstacle Clearance (ROC) to ensure safety across various instrument flight procedures.
- For en-route segments (including STARs and feeders), TERPS specify constant ROC in primary areas, with distinct OEA construction techniques for conventional versus RNAV, and incorporate considerations like Minimum Crossing Altitudes (MCAs).
- Departure procedures, such as diverse departures, ODPs, and Visual Climb Over Airport (VCOA) procedures, utilize specific sloping obstacle clearance surfaces (e.g., 40:1) and mitigation strategies like published climb gradients or visual avoidance for obstacles.
- The application of TERPS criteria can vary due to approved waivers, the development of special procedures for unique situations, and the principle that older procedures remain valid under the criteria enforced at their last amendment.
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