Here is some information on the research of lightning and aircraft interaction.
I've seen a video of some of these experiments, but I can't find it on the internet.
Lightning might have been a factor. There is some speculation that aircraft with composite material might be more vulnerable to lightning strikes - but as of now, that's speculation.
Commercial aircraft have lightning wicks (basically lightning rods) or protusions with which to facilitate the conduction current in a more controlled process.
Lightning Strikes Airplane [Boeing 747] During Takeoff
As Fred mentioned, it will be difficult to find in the mid Atlantic. The craft seems to have gone missing somewhere near the mid-Atlantic Ridge.