Over the air connection issues

I have a question concerning connecting a mote device on a public OTA connection. This mote device is gonna be used to send gps coordinates from a helicopter. If that is the way it is gonna be used, should i be using ABP instead of OTA?

Using ABP has an advantage over OTAA. ABP device does not need to join first, it will send its coordinates as soon as it is powered up and the GPS has a fix.