[rob74]

The reason it detonated now is probably corrosion eating away for decades. Which also has made it incredibly dangerous to defuse WW2 bombs, because their behavior is so unpredictable.

If you look at the photo in the article, the bomb seems to be at the very edge of the taxiway, where a plane is unlikely to drive directly over it. If it would have been a little bit closer to the center, it might have happened just as you described...

[Dalewyn]

I would like to mention that the wings of most jetliners almost reach or extend over the edge of most taxiways.

I would also like to mention that the wings carry most of the jet fuel.

Yeah. I'm glad RNGesus decided to be on humanity's side this time.

[rob74]

I wasn't referring to the damage the explosion might have done to the plane, I was thinking about the explosion being more likely to be triggered if the landing gears of taxiing planes pass directly overhead rather than at a certain distance. Then again, since the ground under the taxiway is already compacted, any mechanical effect that reaches a buried bomb is probably vibration rather than direct pressure, and that also has an effect at some distance (but it's probably still stronger directly underneath)