Geebax
Captain
Australia
Offline
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nickedw Posted at 6-4 21:31
Where do I say I calibrated the compass? And I didn’t make a mistake. The aircraft behaved erratically, I have a clearly defined take off procedure which I’ve used thousands of times in all kinds of hostile environments including moving ships. Operating from steel structures (like ships) it is common for the aircraft to force a compass calibration in order to take off - I don’t do them for fun.
Can I just emphasise this is a phantom4 RTK - it is not the same as a phantom4. I have both, and they are very different, it’s not a cosmetic thing, they have different hardware and completely different software, so if you’re reading this without having seen an RTK don’t assume it’s like a normal phantom.
"I calibrated the compass before flight, and didn’t see any compass errors on the TX, I was in area with plenty of steelwork so it sounds likely."
Those are your words I believe. The P4RTK is indeed different to other Phantoms, but the compass is no different. I won't argue with you, since you clearly know better.
So I will leave you with this, should you choose to take notice of it. A quick search on this forum will turn up dozens of situations where taking off from a surface containing ferrous metal caused loss of control of the aircraft. If you take off from ships, then you need to take precautions to avoid the aircraft being influenced by the metal in the ship. And, as has been pointed out to flyers many times, calibrating the compass has nothing to do with being in the influence of local ferrous metal, it is performed to identify the metal parts of the aircraft itself from the earth's magnetic field. Finally, a common misconception is that the aircraft 'forces' you to calibrate the compass, it does not. The correct message presented to you is telling you to move away from the influence of the nearby magnetic field, not to perform a calibration.
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