Narrative:

On a 4 pilot flight from ZZZZ-jfk; we were given vectors around jfk for a change of approach from ILS runway 31R to ILS runway 4R in IMC conditions. The captain was pm and the first officer was PF. The ATIS called for 6 SM with haze; 1200 ft broken; winds 130 degrees/3 KTS. The last clearance was from jfk approach 'turn to 020 degrees; maintain 1500 ft; cleared ILS runway 4R approach.' the checklists were completed prior to 1000 ft MSL. The approach was continued as I was watching for the lights on the ground. I had a sighting at 800 ft; then obscured until around 550 ft MSL. The visibility was around 4 SM. As the litany for 500 ft was announced; I asked if we had been cleared to land. The captain asked and we were given 'contact tower on 118.1;' heard by all 4 pilots. As the captain (PNF) was trying to get landing clearance; the first officer (PF) was in the flair; touched down; and came to a stop. On the runway; we decided the correct frequency was 119.1. Tower asked if we could hear him; we replied affirmative; and they gave us taxi instructions off the runway; turned us over to ground and we proceeded to taxi to our gate with no further incident. There was no discussion from the tower about the landing and we did not bring it up. There was no one in front of us on the runway and no one close to us behind. It was a decision to land instead of going around since we had been flying a long time; the WX was bad; the visibility and cloud coverage was lower than reported; and there was no apparent conflict on the runway. In retrospect; we all had keys to check for landing clearance but were focused on the WX. In our debrief; we all decided that we must stick to our habits; back each other up as if we were each actively flying; and don't assume things were done without questioning. There was good interaction between us and no problem with pointing out miscoms or route/direction changes.

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Original NASA ASRS Text

Title: B777 LANDS AT JFK WITHOUT A CLRNC.

Narrative: ON A 4 PLT FLT FROM ZZZZ-JFK; WE WERE GIVEN VECTORS AROUND JFK FOR A CHANGE OF APCH FROM ILS RWY 31R TO ILS RWY 4R IN IMC CONDITIONS. THE CAPT WAS PM AND THE FO WAS PF. THE ATIS CALLED FOR 6 SM WITH HAZE; 1200 FT BROKEN; WINDS 130 DEGS/3 KTS. THE LAST CLRNC WAS FROM JFK APCH 'TURN TO 020 DEGS; MAINTAIN 1500 FT; CLRED ILS RWY 4R APCH.' THE CHKLISTS WERE COMPLETED PRIOR TO 1000 FT MSL. THE APCH WAS CONTINUED AS I WAS WATCHING FOR THE LIGHTS ON THE GND. I HAD A SIGHTING AT 800 FT; THEN OBSCURED UNTIL AROUND 550 FT MSL. THE VISIBILITY WAS AROUND 4 SM. AS THE LITANY FOR 500 FT WAS ANNOUNCED; I ASKED IF WE HAD BEEN CLRED TO LAND. THE CAPT ASKED AND WE WERE GIVEN 'CONTACT TWR ON 118.1;' HEARD BY ALL 4 PLTS. AS THE CAPT (PNF) WAS TRYING TO GET LNDG CLRNC; THE FO (PF) WAS IN THE FLAIR; TOUCHED DOWN; AND CAME TO A STOP. ON THE RWY; WE DECIDED THE CORRECT FREQ WAS 119.1. TWR ASKED IF WE COULD HEAR HIM; WE REPLIED AFFIRMATIVE; AND THEY GAVE US TAXI INSTRUCTIONS OFF THE RWY; TURNED US OVER TO GND AND WE PROCEEDED TO TAXI TO OUR GATE WITH NO FURTHER INCIDENT. THERE WAS NO DISCUSSION FROM THE TWR ABOUT THE LNDG AND WE DID NOT BRING IT UP. THERE WAS NO ONE IN FRONT OF US ON THE RWY AND NO ONE CLOSE TO US BEHIND. IT WAS A DECISION TO LAND INSTEAD OF GOING AROUND SINCE WE HAD BEEN FLYING A LONG TIME; THE WX WAS BAD; THE VISIBILITY AND CLOUD COVERAGE WAS LOWER THAN RPTED; AND THERE WAS NO APPARENT CONFLICT ON THE RWY. IN RETROSPECT; WE ALL HAD KEYS TO CHK FOR LNDG CLRNC BUT WERE FOCUSED ON THE WX. IN OUR DEBRIEF; WE ALL DECIDED THAT WE MUST STICK TO OUR HABITS; BACK EACH OTHER UP AS IF WE WERE EACH ACTIVELY FLYING; AND DON'T ASSUME THINGS WERE DONE WITHOUT QUESTIONING. THERE WAS GOOD INTERACTION BTWN US AND NO PROB WITH POINTING OUT MISCOMS OR RTE/DIRECTION CHANGES.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.