Joeyb747,
the frequency that the crew was referred to, 118.27, is not monitored and I could not find it in any of the documentation. I am assuming it is used in certain situations, i.e. distress. You can hear the controller fine as he is broadcasting on two frequencies, one of the departure freq and the 118.27 that's why we can't hear the pilot replies.
I will talk with Dave and see if he can have one of his contacts to verify the freq and then I will add it to the app feed.
Cheers,
Marek