Instrument Flying with GPS—What Your Flight Instructor Didn’t Teach You
Here’s a sample from my new Max Trescott’s GPS & WAAS Instrument Flying Handbook.
Three Ways to Fly an Approach
“Most instrument approaches can be flown in either of two ways: via own navigation, also called pilot navigation, which often involves a procedure turn and via radar vectors from ATC. In addition, many GPS approaches can be flown a third way, which involves being cleared directly to the intermediate fix of the approach. We’ll discuss that third option in detail in Chapter 10.
“Own navigation is used in the real world when aircraft are below radar coverage and ATC can neither see nor vector the aircraft. In that case, aircraft can safely fly the approach on their own, provided they fly the instrument approach exactly as published. This is usually more work than flying an approach via vectors and often includes flying away from the airport before turning around using a procedure turn to fly inbound to the airport. Own navigation is also used heavily in training, so that pilots become familiar with its intricacies.