Narrative:

The ATIS advertised south lndgs at den international, with a strong wind from the south of 25 KTS. Upon contacting approach control the captain (PNF) accepted a short turn in to runway 7. I was very busy getting the airplane down and configured. Also, we were cleared for the visual and told to contact tower, we were #2 for the runway. We watched the aircraft ahead of us go around as approach told us again to contact the tower. The captain, upon seeing the dramatic crab required asked the controller 'what is the matter with runway 17.' meanwhile, we have passed through 1000 ft AGL. I got very busy monitoring aircraft control and tried to cover the final descent checklist. I landed and taxied the aircraft to the gate. Walking through the terminal, the captain asked if we had received landing clearance. Although I could remember the 2 calls to contact the tower, and the controller saying contact ground, I found myself uncertain of hearing the landing clearance. My lesson from this was to keep radio xmissions to time critical/pertinent subjects in all critical phases of flight, especially approach and landing. As I plan on taking this lesson to the left seat with me I will also try to associate a taxi light 'on' switch position to verify landing clearance.

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Original NASA ASRS Text

Title: FLC OF A B777 FORGOT LNDG CLNRC AND DID NOT REMEMBER THAT THEY HAD NOT OBTAINED CLRNC UNTIL AFTER THEY HAD DEPLANED.

Narrative: THE ATIS ADVERTISED S LNDGS AT DEN INTL, WITH A STRONG WIND FROM THE S OF 25 KTS. UPON CONTACTING APCH CTL THE CAPT (PNF) ACCEPTED A SHORT TURN IN TO RWY 7. I WAS VERY BUSY GETTING THE AIRPLANE DOWN AND CONFIGURED. ALSO, WE WERE CLRED FOR THE VISUAL AND TOLD TO CONTACT TWR, WE WERE #2 FOR THE RWY. WE WATCHED THE ACFT AHEAD OF US GAR AS APCH TOLD US AGAIN TO CONTACT THE TWR. THE CAPT, UPON SEEING THE DRAMATIC CRAB REQUIRED ASKED THE CTLR 'WHAT IS THE MATTER WITH RWY 17.' MEANWHILE, WE HAVE PASSED THROUGH 1000 FT AGL. I GOT VERY BUSY MONITORING ACFT CTL AND TRIED TO COVER THE FINAL DSCNT CHKLIST. I LANDED AND TAXIED THE ACFT TO THE GATE. WALKING THROUGH THE TERMINAL, THE CAPT ASKED IF WE HAD RECEIVED LNDG CLRNC. ALTHOUGH I COULD REMEMBER THE 2 CALLS TO CONTACT THE TWR, AND THE CTLR SAYING CONTACT GND, I FOUND MYSELF UNCERTAIN OF HEARING THE LNDG CLRNC. MY LESSON FROM THIS WAS TO KEEP RADIO XMISSIONS TO TIME CRITICAL/PERTINENT SUBJECTS IN ALL CRITICAL PHASES OF FLT, ESPECIALLY APCH AND LNDG. AS I PLAN ON TAKING THIS LESSON TO THE L SEAT WITH ME I WILL ALSO TRY TO ASSOCIATE A TAXI LIGHT 'ON' SWITCH POS TO VERIFY LNDG CLRNC.

Data retrieved from NASA's ASRS site as of July 2007 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.