I copied the Futaba setting from ThatHPIGuy's youtube video. The last setting was pushing the throttle to 53% & saving this value under FailSafe. What is the relationship of the throttle level with failsafe?
That setting won't do anything with the phantom. This is a failsafe control that when the transmitter is turned off, it drops the throttle to that setting. The naza just checks if it has a connection to the transmitter.
in my understanding.this will applied when your phantom goes out of transmit range.your phantom will automatically switch to fail safe mode.
the 53% throttle is for when your phantom gets back in the transmit range and you wish to control back the phantom you need to switch to ATTI mode and your phantom will stay at 53% throttle( it will hover at this point) and you can start regain the control of the phantom .