3-D
Captain
Flight distance : 635764 ft
United States
Offline
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There will likely be some very scientific answers, but my simple answer is this:
The MA actually does a system check when you power it on, and verifies compass calibration as part of that system check. I've found that it if i'm moving toward the location where I want to launch, and I turn the MA on while in motion, it asks me for compass calibration. If i'm still, and already in the location, and I simply turn it on and put it down, I don't get that prompt. There are lots of factors that can change the compass calibration. Some of them major, (like taking off near a car or on concrete with rebar underneath, and some as simple as the device wasn't able to get a lock when it tried to.
As I said, very unscientific, but for my purposes, and my experience, it answered my question. Once I figured this out, for the next 30 flights, I only had to calibrate 1 time. |
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