No, but I can't help noticing how quickly spots around certain airfields/airports become overrun with litter. I don't blame the real enthusiasts (spotters) for this as I know that most want to preserve these good spots. The worst offenders are often passing visitors with families. In some cases, as in Birmingham some years ago now, one popular access road off the A45 had to be closed to the detriment of the true enthusiasts because it became an unofficial dumping ground. I know it's already done by some, but I recommend that the local spotting fraternity at airports take it upon themselves, on a voluntary basis, to keep spotting areas litter free.