WRONG RWY LNDG.

Narrative

ON APCH AT SJU; CLRED BY APCH CTL TO INTERCEPT LOC FOR RWY 10; MAINTAIN 3000 FT. APCHING THE OM I QUERIED APCH IF WE WERE CLRED FOR THE APCH SINCE WE WERE QUITE HIGH. CTLR REPLIED 'NEGATIVE; MAINTAIN 3000 FT.' WITHIN 30 SECONDS; CTLR ASKED IF WE HAD THE ARPT; I REPLIED IN THE AFFIRMATIVE. HE CLRED US FOR A VISUAL RWY 10 AND TOLD US TO CONTACT TWR. WHEN I CHKED IN WITH TWR ON FINAL FOR RWY 10 HE SAID TO EXPECT CLRNC TO LAND ON SHORT FINAL. DURING THIS TIME THE CAPT AND I WERE VERY BUSY TRYING TO CONFIGURE THE ACFT AND GET DOWN TO THE GS. BY 1000 FT THE ACFT WAS CONFIGURED AND ON THE GS. DURING THIS TIME NUMEROUS RADIO TRANSMISSIONS WERE GIVEN BY TWR TO OTHER COMMUTER ACFT FOR TKOF AND RWY CLRNC. AT APPROX 500-800 FT AGL TWR ISSUED CLRNC TO LAND TO US. ANOTHER COMMUTER ACFT WAS THEN GIVEN CLRNC TO TKOF ON RWY 10. BOTH CAPT AND FO WERE FOCUSED ON THIS ACFT TO INSURE THAT HE WOULD BE AIRBORNE PRIOR TO OUR LNDG. HE BECAME AIRBORNE BY THE TIME WE REACHED 200 FT AGL SO WE CONTINUED AND LANDED. ON ROLL OUT THE TWR CTLR ASKED IF WE WERE AWARE THAT WE WERE CLRED TO LAND ON RWY 8! I RESPONDED THAT ON SHORT FINAL I HEARD CLRNC FOR RWY 10 AND READ BACK RWY 10. HE SAID INITIALLY WE WERE CLRED FOR RWY 10 BUT WHEN HE GAVE FINAL CLRNC IT WAS FOR RWY 8; BUT NO PROBLEM JUST A COM FOWL UP. THIS APCH WAS NON STANDARD FROM APCH CTL ON. THE 'EXPECT CLRNC ON SHORT FINAL' SHOULD HAVE BEEN A CLUE; AND IF HE DID GIVE CLRNC TO RWY 8 HE NEVER SAID 'CHANGE CLRNC TO LAND ON RWY 8' AND GET AN ACKNOWLEDGEMENT; ADDITIONALLY I HEARD WHAT I WANTED TO HEAR. WHEN ANOTHER ACFT WAS ON THE RWY I SHOULD HAVE RECONFIRMED OUR CLRNC. A VERY VALUABLE LESSON LEARNED.