Absolutely I can hear them many others can too where we fly. Does not matter how much noise in the pits or in the air as far as models. I am not a spring chicken anymore either with over a half century behind me. Maybe it was my military training. A FS has different sound frequencies than a four stroke or two stroke gas or nitro. You have to learn how to identify the difference.

As far as landing Every time I hear a plane that is just not true. We identify its location and do a "threat assessment" to determine if it is coming near our field. A "possible" is watched until it is determined that it is not coming near the field. We have had days where the air traffic is almost constant all smaller aircraft. Many are flying over at well over 2000 feet and thus no threat. But being diligent in being able to spot the aircraft thus makes everything safer for all.

In many cases you will hear an airplane before you can spot it. We have had up to three minutes to bring aircraft in thus landing everything in the air safely before a FS plane lands.