Narrative:

Captain selected managed speed early causing aircraft to slow prior to normal. This caused an aircraft (B737) to close the spacing and our TCASII called 'traffic.' at about the same time approach control asked us to go to tower. Before I (the PNF) could go to tower, the ECAM warning system alarmed us of a 'forward cargo door open.' the captain stated 'ECAM action' which requires me to perform the checklist functions. This also relieves the PNF from the radio call responsibilities. Once ECAM checklist items were complete and I looked for the TCASII alerted traffic, I advised the captain I was back with him. He advised no changes. We landed a few seconds later. At this time we realized that we landed without a clearance but ATC (sfo tower) was nice enough not to pursue the matter. We had flown as a crew for 4 previous trips with no problems. The early speed reduction, TCASII alert, and ECAM warning seemed to happen at once, about the same time approach advised contacting the tower. The distrs in the approach and landing environment caused a breakdown in communication with ATC while we were performing our separate duties.

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Original NASA ASRS Text

Title: A320 FLC LWOC.

Narrative: CAPT SELECTED MANAGED SPD EARLY CAUSING ACFT TO SLOW PRIOR TO NORMAL. THIS CAUSED AN ACFT (B737) TO CLOSE THE SPACING AND OUR TCASII CALLED 'TFC.' AT ABOUT THE SAME TIME APCH CTL ASKED US TO GO TO TWR. BEFORE I (THE PNF) COULD GO TO TWR, THE ECAM WARNING SYS ALARMED US OF A 'FORWARD CARGO DOOR OPEN.' THE CAPT STATED 'ECAM ACTION' WHICH REQUIRES ME TO PERFORM THE CHKLIST FUNCTIONS. THIS ALSO RELIEVES THE PNF FROM THE RADIO CALL RESPONSIBILITIES. ONCE ECAM CHKLIST ITEMS WERE COMPLETE AND I LOOKED FOR THE TCASII ALERTED TFC, I ADVISED THE CAPT I WAS BACK WITH HIM. HE ADVISED NO CHANGES. WE LANDED A FEW SECONDS LATER. AT THIS TIME WE REALIZED THAT WE LANDED WITHOUT A CLRNC BUT ATC (SFO TWR) WAS NICE ENOUGH NOT TO PURSUE THE MATTER. WE HAD FLOWN AS A CREW FOR 4 PREVIOUS TRIPS WITH NO PROBS. THE EARLY SPD REDUCTION, TCASII ALERT, AND ECAM WARNING SEEMED TO HAPPEN AT ONCE, ABOUT THE SAME TIME APCH ADVISED CONTACTING THE TWR. THE DISTRS IN THE APCH AND LNDG ENVIRONMENT CAUSED A BREAKDOWN IN COM WITH ATC WHILE WE WERE PERFORMING OUR SEPARATE DUTIES.

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.