Narrative:

During a visual approach, with a lot of radio traffic, we did not receive or failed to hear approach switch us to tower. A normal landing was made. Upon landing we realized the error and called tower and received taxi instructions.

Google
 

Original NASA ASRS Text

Title: UNAUTH LNDG.

Narrative: DURING A VISUAL APCH, WITH A LOT OF RADIO TFC, WE DID NOT RECEIVE OR FAILED TO HEAR APCH SWITCH US TO TWR. A NORMAL LNDG WAS MADE. UPON LNDG WE REALIZED THE ERROR AND CALLED TWR AND RECEIVED TAXI INSTRUCTIONS.

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.