Originally Posted by
Genghis the Engineer
I flew with a "student" who already holds a PPL at the weekend who was using an iPad based GPS nav system. Approx. 15 miles from his home airfield, the batteries went dead and he declared himself lost. Just don't ever let yourself get to that point. [And yes, even he agreed that some remedial instruction was required.
What was the remedial advice? Make sure you charge your device properly, and carry a suitable backup power source if there's no aircraft power?