I don't know about you, but there are plenty of hazards out there for pilots to avoid as it is, now we have to look out for large radio controlled models too! How large you may ask? As modelers build larger and larger models, they are getting more and more dangerous. So many of these folks bring their models out to the local airport to fly it. Only problem is, I don't think that very many of them understand what can happen at a small airport where there is no control tower and many airplanes sans radios operate in and out of them. Way back in 1981 the FAA issued an Advisory Circular, AC 91-57 (download here), regarding the operation of radio control model airplanes. The purpose of the advisory circular was to outline and encourage voluntary compliance with safety standards for model aircraft operators. Just how large are these large rc models? Take a gander at the one in the picture to the right. Only problem is, how many of these rc modelers are even aware of this advisory circular? And, if they are, do they comply with it? Recently, on August 14th, a large radio control model encountered a bi-plane making a low pass at the airport with air show smoke on over the field. This happened in Brighton, Colorado where there apparently was a model aircraft event. The bi-plane sustained some minor damage and the model tumbled to the ground. Check out the video below: Well, one of the largest I have seen is of a B52 bomber with 8 jet engines, and this model airplane actually flew - at least for a little while - until it crashed. Video below: So, be careful out there pilots - you may encounter one of these large rc models sooner than you think! Until next time keep your wings straight and level Hersch! JetAviator7 ps: Don't forget to sign up for our newsletter "All Things Aviation" here!