Originally Posted by
DrivinTheDash
The problem is that pilot requirements in the FARs don't talk about duty. They detail "flight time limitations and rest requirements," rather than duty time limits. The 16-hour "duty day" is implied through the 8-hour lookback rest requirement; there isn't a stated duty-day limit in FAR 121.471.
again... already been decided... check the ALPA online library for their FTDT guidebook. An "on call period" RAP or other block of time where you are required to answer the phone is duty... otherwise they could call you at the end of your "on call period" and then work you another 16 hours.