It's what happens when something gets sucked into a jet engine, and usually is not a good thing.
The two major concerns with using pervious concrete on the "air side" of an airport, are:
1) Raveling caused by the heavy wheel loads, and
2) The FOD due to the above raveling.
There has been some debate that planes can land on dirt landing strips, so it shouldn't be a problem; and that the jet engines would be more likely to blow debris away rather than suck it in, so it shouldn't be a problem. However, in speaking with knowledgeable sources on this (my father, a jet engine guy, but not a FOD expert) I been convinced that pervious concrete could lead to FOD. FOD could occur during taxi and takeoff from the ground-engine vortex, or in landing from debris kicked up by the nose gear or thrust reversers.A quick summary, planes that land on dirt strips are typically prop planes (not jets), so less likely to suck debris off the ground. Jets that do land on sodded or gravel landing strips are modified to protect them from debris and deflect it from the engines, however your average commercial aircraft has not been equipped as such. Further, jets may land on unpaved strips without the assistance of the thrust reversers to avoid kicking up loose material.
So, we have two options:
1) Equip all jets with Unpaved Strip Kits
2) Not use pervious concrete on the "air side" of airports until we know better how to control raveling.