The built in failsafe features are 5 rotor mode, which keeps the H airborne in the even of a motor or prop failure, and RTH. If the something happens to the ST16 like being dropped into the lake, then the H will detect the loss of control signal. It will fly back to the last known position of the ST16, will descend, lower the landing gear, land about 13' away for the ST16 and shut down the motors. As mentioned above, only the altitude is user adjustable.are there any failsafe settings programmed into the H