'Chime' system comunication
1 chime- FA will call the cockpit as time permits.
2 chimes- FA will call the cockpit immediatley.
Chimes inop- Pilot will call the FA via the PA.
PA and chimes inop- Pilot will use the NO SMOKING sign for one chime or two. For one chime, the sign will be turned OFF until the FA has reached the cockpit, then turned back on. For two chimes, the sign will be switched OFF then back ON.