Check every segment
If your itinerary uses multiple carriers, one permissive policy does not cancel a stricter one. The live checker highlights the strictest battery ceiling and spare-battery cap across the selected airlines.
Drone-body placement is not always “strictest wins”
One carrier may require the drone in cabin baggage while another prefers or requires checked carriage. The tool therefore shows the placement rule for each segment instead of pretending there is always one universal bag that works unchanged from origin to destination.
Plan for transfer reality
If baggage is through-checked, you may not be able to repack the drone between segments. If the airline rules conflict, contact the carriers before travel and ask how the transfer will be handled.
Keep evidence accessible
Use the share/print travel card and keep the official source links available offline or as screenshots before you travel.