It's not that municipalities and school boards and rec associations are against model aviation. The problem comes down to insurance and getting sued. Generaly, it's quite the opposite any well-prepared approach generally will get permission to use the facilities. HOWEVER, on thing that they are sticky about is that in order to get access to the use of these facilities for anything other than walking around, you need to provide proof if insuarnce coverage.

MAAC's own policies WRT to schoolyard/Park/open-space activities have been driven by the same problems which has resulted in the current rules being what they are and not what they were five, ten, twenty or thirty years ago.

Essentially, in order to fly under the MAAC insurance umbrella, you have to meet the basic requirements: permission of property owner, flying location registered through a MAAC-chartered/.registered club, and posting of the safety signage.

Even simple rubber-powered models have the ability to cause some damage (it has happened, especially in the sue-happy US). All it takes is someone who got fearful (eg, plane flies into face or near them without causing any physical damage), and BAZOOM! lawyers crawling out of the woodwork and dragging you into court.

I'm not running down the idea of updating the Delta Dart (a design thirty years old), but commenting on your flying them in a location that is probably not going to be covered by MAAC insurance.

Which means that you are flying at your own risk. Also, you probably do not have a permit to do so from the people who actually own the property.

I've got four large parks near to me and all have similar signs posted: none say "no planes" but the list of what's not allowed is quite long. The soccer fields also include "no baseball playing."