Narrative:

After landing on runway 28R at sfo, we exited the runway at intersection K and were told to hold short of runway 28L. During this delay I (copilot) asked the captain to monitor the radios and I talked to airline operations to confirm the gate assignment. We were then cleared to cross runway 28L. After exiting the runway both the captain and myself neglected to switch to ground control and we taxied into the ramp area, where I discovered our error. Our call sign was air carrier xxy, the captain and I heard a clearance for xxz which may have been a factor. Also, my break in communications by talking to operations before finishing all communications with ATC. This could have been avoided by not initiating any non-ATC radio communications till after ground control contact.

Related reports:

Google
 

Original NASA ASRS Text

Title: FREQ CHANGE MISSED LATE WHEN ACR MLG CREW DISCOVER THAT THEY FAILED TO SWITCH TO GND CTL FREQ AFTER CLRING RWY.

Narrative: AFTER LNDG ON RWY 28R AT SFO, WE EXITED THE RWY AT INTXN K AND WERE TOLD TO HOLD SHORT OF RWY 28L. DURING THIS DELAY I (COPLT) ASKED THE CAPT TO MONITOR THE RADIOS AND I TALKED TO AIRLINE OPS TO CONFIRM THE GATE ASSIGNMENT. WE WERE THEN CLRED TO CROSS RWY 28L. AFTER EXITING THE RWY BOTH THE CAPT AND MYSELF NEGLECTED TO SWITCH TO GND CTL AND WE TAXIED INTO THE RAMP AREA, WHERE I DISCOVERED OUR ERROR. OUR CALL SIGN WAS ACR XXY, THE CAPT AND I HEARD A CLRNC FOR XXZ WHICH MAY HAVE BEEN A FACTOR. ALSO, MY BREAK IN COMS BY TALKING TO OPS BEFORE FINISHING ALL COMS WITH ATC. THIS COULD HAVE BEEN AVOIDED BY NOT INITIATING ANY NON-ATC RADIO COMS TILL AFTER GND CTL CONTACT.

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.