Part 107 for sure and I'm not sure about recreational so maybe/maybe not.....can get minor exceptions to grids heights if they apply for it. Otherwise, 0 is the no-fly area of the restricted or controlled airspace.
Hard hit!
DJI is easy to deal with and very reasonable on repair costs.
Start a repair ticket with them. They will email a shipping label, send you a cost within a few days of when they get your box. If you accept the repair cost, you will end up...
The battery management I/C (chip) on the RC1A and RC1B controllers main board is prone to failure, which is another reason why the older controllers can't hold a charge. Perhaps a good alternative would be to scout out a reconditioned RM500.
You CAN replace the batteries in these. You can find them on eBay, a little cheaper on aliexpress, all of them being several weeks of shipping to come from China.
I don't know if it's causing your linking issue, which could happen if they start...
I cannot upgrade my Air3 as it says not enough memory ! When I check it says 27 mbs used but in the photo folder it shows empty
I have removed the SD card reformatted and still not enough memory
Still showing 27 mbs used and still an empty folder