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HOLDING PATTERN CALCULATOR

The Holding Pattern Calculator is a tool that assists pilots in determining both the correct holding pattern and entry method (Direct, Parallel or Teardrop) for an ATC assigned holding clearance.

To use, simply touch the screen and rotate to set the holding pattern to the desired ATC assigned inbound leg.   To aid in ease of use both the track of the inbound and outbound legs are depicted.  If the hold is Non-standard (to the left) simply touch the "Non-Standard" switch to depict the correct pattern.  Then select "Heading" and rotate the aircraft to the appropriate heading towards the fix.  The image may also be locked to protect the settings from inadvertent touches by selecting the "Lock" button.

The Holding Pattern Calculator is useful and educational for pilots and student pilots.  Its simple design provides excellent visualization of the aircraft heading in relation to the holding pattern.

INSTRUCTIONS FOR USE
Select “Inbound” at the top of the screen - if it is not already - so that that the Inbound (holding pattern) image is selected. To rotate the pattern to the assigned holding pattern, touch the screen and rotate accordingly.

Rotate the holding pattern until the radial or heading numbers indicate you have selected your assigned holding pattern.
Select “Heading” at the top of the screen to select the aircraft heading. Touch the screen to rotate the aircraft heading to the appropriate heading.

Once you have set both the holding pattern and the heading, you can see the recommended entry method at the bottom of the screen.

Guides are provided for Teardrop Entry and Parallel Entry recommendations.

If you want to protect the settings from inadvertent touches, select “Lock” at the top of the screen.
If you are assigned a non-standard holding pattern (to the left), simply touch the switch at the bottom of the screen to switch to Non-Standard mode.

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Holding Pattern Calculator
is available in the App Store for $1.99