RE: *Airtronics RD8000 2.4 GHz*
It doesn't make sense to have two people walking through it with you. Jack knows more about the radio than anyone so if it is a program that is simply turned on, he can walk through the programming with you to make sure everything is off. There's lots of different ways to turn off a function like epa, dual rate, one of the pre-programmed mixes like throttle/elev or elev/flap. Maybe one of those was turned on while Minh was checking the radio.
When Minh checks the radios he checks all the channels for basic operation. He's human so I guess he could of made a mistake but since he's a technician with 20 years experience it certainly isn't due to lack of knowledge.
Mike