Just too much radio waves in the atmosphere!!! The proliferation of cell phone technology and techies' over confidence that everything electronic stuff is safe despite anecdotal evidence and reports to the contrary make us think all is well and dandy. I have seen strange things happened in my glass cockpit when cell phone and car radar detecors were switched on; the strange thing was that the strange stuff happened intermittently or transiently; unable to be duplicated despite repeated attempts, then suddenly they occurred sporadically again.
Remember the B737 rudder PCU which reverse commanded years ago...it only happened after several years of testing with liquid nitrogen!
It amazes me how people can just dismiss EMI as possible cause without attempting to test/duplicate the possible cause exhaustively.
Last edited by Akali Dal; 25th Feb 2008 at 21:32.