Flight Path Vector (FPV) in deep - [Difference between Flight Path Angle and Pitch Angle explained] 

The Flight Path Vector is a cockpit indication that tells you what is your Flight Path Angle relative to the Horizon.
If you position the FPV (Flight Path Vector) over the horizon your Flight Path Angle will be 0 and the aircraft will fly in a level flight, even if your Pitch Angle is positive.
It is paramount to understand the difference between the Pitch angle and the Path Angle in order to use the FPV correctly.
The Airliners like the Boeing 737 or the Airbus 320 have a low lift capability, so these type of aircraft's needs to have a positive Pitch angle to fly straight.
The Flight Path Vector can be useful during the Approach because it provides you with instant information about your Flight Path Angle.
This system uses Inertial and Barometric information.
The FPV gives you the information regarding your drift, however, to use this feature properly you need to have a Horizontal heading scale.
A clear example that shows the difference between these two angles could be the following:
When an aircraft slow down in a level flight it needs to increase the pitch in order to maintain the Altitude constant. What you will see in this case, is a rise of the pitch angle while the path angle will remain over the horizon.
If you are interested in learning how to fly IFR watch the following videos:
IFR BASICS: • Standard Arrival Route...
SID CHART: • Standard Instrument De...
STAR CHART: • Standard Arrival Route...
VOR APPROACH: • How to Fly a VOR APPRO...
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Disclaimer:
THIS VIDEO IS FOR ENTERTAINMENT PURPOSES ONLY.
NOT FOR REAL-LIFE OPERATIONS.
PLEASE REFER TO THE OFFICIAL MANUAL AND DOCUMENTATION.
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