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IFD540/440 Touch Screen GPS/NAV/COM : GPS failure

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Author: MysticCobra
Subject: GPS failure
Posted: 07 May 2015 at 11:08am

Originally posted by oskrypuch oskrypuch wrote:

When you have the GPS outage in the air, how long does it last? Just curious.

It varies wildly.  On the flight where it was the worst (a 3+ hr leg), the outages could last upwards of several minutes, but sometimes it was only a few seconds.  I might get three outages in 5 min, then I might fly for an hour before another outage.  

I think that was the flight that I tried power-cycling the 540 in air to clear the issue, which did seem to help, but didn't completely fix it...if I recall correctly, I did get at least one or two more outages after that also.

Most of my flights have not had an issue.  My typical legs are between 45 min and 2 hrs.

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