I am curious reading this thread how Alaska handles pay and FAR flight time. It sounds like at Alaska the pay clock starts when the cabin door closes. That is a clear improvement over most airlines where it is based on pushback. How are times tracked? Do you have one set of times for pay and another set for actual FAR flight time? What is the trigger for a acars out message? I have seen parking brake release, beacon on and GPS groundspeed in use on various aircraft and airlines. Trying to sort out how this ties into the deice issue.