Arney - The "Black Box" is that little device they tow to detect the aircraft black box ping. It needs to be close to the actual aircraft location because the black box ping is a low power signal. IMO the search area is still way too big for this to be effective..
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.