There is an episode of Look Around You with a vegetable orchestra. It's a bit different, though.

This has nothing to do with explosions or even fires. It's even simpler.

The problem is that Lithium is the lightest metal. Now, let's assume everyone on the plane just took all the lithium they wanted onto the plane. Then it only takes one person who is an alchemist to turn all this lithium into gold. Now as you all know from observation, gold is much heavier. The new weight would make flying impossible and the plane would crash.

It's likely someone in the intelligence community came across this "Al-Qa'my" terrorist plot and are taking proactive steps to prevent it.

Once again, the TSA has made us not only safe, but feeling safe.