COFFEE BURN INJURY TO PAX.

Narrative

WE WERE ENRTE FROM SFO-MEM AND FLYING A NORTHERN DEV RTE TO AVOID TURB S OUR COURSE. OUR RTE PROVIDED A RELATIVELY SMOOTH RIDE. JUST OVER DEN I ASKED OUR NEW CTLR ABOUT RIDE RPTS. HE ADVISED THAT HE HAD NO ADVERSE RIDE RPTS. ABOUT THAT TIME WE ENCOUNTERED ONE SHORT MODERATE BUMP. THIS FOLLOWED WITH A CALL FROM OUR REAR CABIN FLT ATTENDANT. SHE RPTED THAT HER SERVING CART HAD TIPPED ON ITS SIDE AND SPILLED HOT COFFEE ON ONE OF OUR PAX BURNING HIS ARM AND SHOULDER. BEING A DOCTOR; HE WAS ABLE TO TREAT HIMSELF WITH OUR ONBOARD FIRST AID KIT. WE CONTINUED ON TO MEM WITH NO FURTHER PROBS OUR WX PEOPLE AND DISPATCHERS GO OUT OF THEIR WAY TO AVOID TURB; BUT THIS ONE AREA WAS NOT IN THEIR AREA OF POSSIBLE TURB. HAVING FLOWN OVER (FOR 28 YRS) THIS AREA; I KNOW THERE CAN ALWAYS BE THE POSSIBILITY OF UNKNOWN OR FORECAST TURB. ON THIS PARTICULAR FLT; I KEPT THE SEATBELT SIGN ON FOR THE FIRST 2 HRS 45 MINS AND MADE SEVERAL ANNOUNCEMENTS TO THE PAX TO KEEP THEIR SEAT BELTS ON JUST IN CASE. I FELT WE WERE JUST ABOUT TO EXIT THE AREA OF POSSIBLE TURB WHEN WE ENCOUNTERED THIS MODERATE BUMP. HAD WE HAD A LITTLE ADVANCE NOTICE; WE COULD HAVE SET THE BRAKE OR STOWED OUR BEVERAGE CARTS TO AVOID POSSIBLE INJURY TO ANY OF OUR PAX OR FLT ATTENDANTS.