B767 CREW HAD FLT ATTENDANT INJURED WHEN THE ACFT WAS PARKING AT MROC.

Narrative

ON TAXI IN TO GATE X SJO; ACFT CAME TO STOP PRIOR TO REACHING STOP POINT OR SIGNAL FROM MARSHALLER. ADDED PWR TO 35% N1 WITH NO MOVEMENT OF ACFT; EVEN THOUGH WE WERE VERY LIGHT GROSS WT. CLRED THE AREA BEHIND US AND USED 40% N1; NO HELP. AT 45% N1 ACFT BEGAN TO MOVE; MARSHALLER IMMEDIATELY GAVE THE STOP SIGNAL. I STOPPED THE ACFT AND HEARD SOME NOISE IN THE CABIN. WHEN I INQUIRED; A FLT ATTENDANT TOLD ME SHE HAD FALLEN AGAINST THE BULKHEAD AND THAT HER ELBOW WAS HURTING; BUT THAT SHE WOULD BE FINE. I PERFORMED THE WALKAROUND AND OBSERVED THAT THE ARPT HAS CONCRETE PADS FOR THE GEAR TO REST ON IN AN OTHERWISE ASPHALT RAMP AREA. THE SPOT JUST PRIOR TO WHERE THE CONCRETE PAD IS LOCATED IS DIPPED. THIS IS WHAT CAUSED THE ACFT TO STOP ON TAXI IN. IF A NOTE HAD BEEN INCLUDED ON THE ARPT PAGES INFORMING THE CREW OF THIS; I COULD HAVE KEPT SLIGHTLY HIGHER VELOCITY APCHING GATE AND THE LIKELIHOOD OF INJURY WOULD BE REDUCED. BETTER YET; THE CONCRETE PADS SHOULD BE EXTENDED ANOTHER 10+ FT SO THAT CREWS AREN'T SLOWING FOR THE STOP AS THEY REACH THE INDENTED ASPHALT.