It does. . . it doesn't. . . it does. . . it doesn't. . . . Oh, who the hell knows any more?!
I'm talking about whether or not personal electronic devices (PDA's, laptop computers, games, cellphones, etc.) interfere with aircraft navigational aids. A recent study by Carnegie Mellon University researches says it does, that is, these items can pose danger to the normal operation of aviation electronics. This conclusion is, apparently, in contrast to the previously held believe that there was a minimal risk involved.
One of the worst offenders -- GSP receivers (global positional systems).
The study further found that cell phone calls are frequently made during critical stages of flight. We define that as under 10,000 feet, which is roughly climb out and final approach. That's why flight attendants tell you not to use your electronic equipment until after a certain point in the flight.
While the study certainly has its critics, the key issue seems to be one that is reiterated often -- follow the directions of your flight attendant.
Via Inflight HQ