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Minimum Safety Altitude


Minimum Safety Altitude
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140kias
140kias
140kias
posted 7/18/2010 9:34:06 PM
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Could you please advise how the MSA  incorporated in the PLOG is arrived at. Can the parameters be changed. The Horizontal and Vertical Warnings dont seem to have any effect and I cant seem to find any reference in the documentation.
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Tim Dawson
Tim Dawson
Tim Dawson
posted 7/19/2010 9:30:38 PM
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Customer feedback. The defaults in SkyDemon are targetted at people using GPS to aid navigation, and 10 miles either side of track is too conservative.
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140kias
140kias
140kias
posted 7/20/2010 12:02:30 AM
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I was taught +500 ft above highest terrain/object 5nm either side of track. Then add further 300 ft for possible unmarked obstacle on top of terrain. 

So thats +800ft for terrain, +500ft for obstacle

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Minimum Safety Altitude
140kias - 7/18/2010 9:34:06 PM
     Hello, The MSA for a leg is calculated by looking at the terrain and...
Tim Dawson - 7/19/2010 9:50:31 AM
     Could I ask why you chose those parameters for the safety altitude?...
neutron - 7/19/2010 3:56:20 PM
     Customer feedback. The defaults in SkyDemon are targetted at people...
Tim Dawson - 7/19/2010 9:30:38 PM
             I was taught +500 ft above highest terrain/object 5nm either side of...
140kias - 7/20/2010 12:02:30 AM

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