Is there a cell-phone on board?".
that won't be much help if it's turned off, which it should be when on board ........and that's NOT because of possible disturbance to the aircraft's electronics but do to receiving station overload...but this was discussed somewhere else in pprune I believe.
How many pilots know about the recent changes to filling out flight plans? At least now in Germany the pilots, not ais, must fill in that complicated address at the top. I only know it because it was one of the subjects at a recent instrutors training seminar I attended.
Westy