FLT ATTENDANT RPT REGARDING A B767-200 WHICH ENCOUNTERED CAT AND SINCE THE SEAT BELT SIGN WAS ALREADY ON THE CABIN ATTENDANTS WERE NOT WARNED OF THE TURB AND THAT THEY SHOULD BE SEATED. NO INJURIES.

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CLR AIR TURB. SINCE THE SEATBELT SIGN IS NOW ON FOR MOST OF THE FLT; THERE IS NO WAY TO NOTIFY FLT ATTENDANTS THAT WE OURSELVES NEED TO TAKE OUR SEATS. THERE HAS TO BE SOME SIGNAL TO LET FLT ATTENDANTS KNOW TO SIT DOWN; PERHAPS FLASHING THE SEAT BELT SIGN 4 TIMES SINCE THE FLC MAY BE TOO BUSY TO CALL AND EXPLAIN THE SIT GOING ON WITH THE WX. ALSO TO EXPLAIN TO PAX WHY FLC ARE SEATED WITH OUR BELTS ON -- SINCE IT WAS ALMOST IMPOSSIBLE TO ANSWER CALL LIGHTS. WE COULD NOT MOVE SAFELY ABOUT THE CABIN AND PAX DON'T KNOW WHY! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT DURING THE INCIDENT THERE WERE NO INJURIES. THE CABIN ATTENDANTS WERE THROWN ABOUT AND ALSO A FEW PAX WHO WERE UP TO USE THE LAVATORY. THE CARTS HAD NOT BEEN STOWED SINCE THERE WAS NO WARNING OF THE TURB; SO ITEMS FROM THE GALLEY WERE FLYING ABOUT. THE IDEA OF FLASHING THE SEAT BELT SIGN CAME FROM A CAPT ON A FLT FOLLOWING THE INCIDENT. HE SPOKE TO THE CABIN ATTENDANTS PRIOR TO THE FLT WITH THE INFO THAT HE WOULD USE THE FLASHING OF THE SEAT BELT SIGN TO ALERT THEM TO STOW ITEMS AND BE SEATED ON THE JUMP SEATS.