Originally Posted by
Rigga
While they were introduced to Lippitts Hill as ”the quietest in their class” to the local residents, EC145’s were a clattery cacophony on the ground and only slightly noisier than their predecessor AS355Ns. However, once in the air they were quite quiet - especially from below and surprisingly inaudible at observation distances using that nice 15x(?) camera/footstep thingy.
They are definitely not quiet when they are orbiting at 1000' in the immediate vicinity of your house at 3am!
The Kent Surrey & Sussex EC135 is also occasionally on task locally; it's much quieter while orbiting, bit of a hum and occasional blade slap.