Narrative:

Visual approach from civit to lax. Visual conditions, very good for lax area, +10 mi. Due problems with interphone and PA, it was necessary to switch off ATC and company when on PA and interphone. I made announcements to passenger about parallel traffic to runway 24 complex and conversed with flight attendant once out of 1000 ft. When we landed I noticed the ATC frequency was not switched to the tower frequency. Apparently we had remained on approach frequency. We were given hold short runway 25R and other information before going to ground frequency. All appeared normal with tower communications. At no time did I feel uncomfortable or was there any concern about traffic and/or operations. I unfortunately did not catch the change to the tower from approach frequency, due to communications with flight service and the passenger.

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Original NASA ASRS Text

Title: WDB FLC FAILS TO CHANGE TO TWR FREQ ON LNDG. LANDED WITHOUT CLRNC.

Narrative: VISUAL APCH FROM CIVIT TO LAX. VISUAL CONDITIONS, VERY GOOD FOR LAX AREA, +10 MI. DUE PROBS WITH INTERPHONE AND PA, IT WAS NECESSARY TO SWITCH OFF ATC AND COMPANY WHEN ON PA AND INTERPHONE. I MADE ANNOUNCEMENTS TO PAX ABOUT PARALLEL TFC TO RWY 24 COMPLEX AND CONVERSED WITH FLT ATTENDANT ONCE OUT OF 1000 FT. WHEN WE LANDED I NOTICED THE ATC FREQ WAS NOT SWITCHED TO THE TWR FREQ. APPARENTLY WE HAD REMAINED ON APCH FREQ. WE WERE GIVEN HOLD SHORT RWY 25R AND OTHER INFO BEFORE GOING TO GND FREQ. ALL APPEARED NORMAL WITH TWR COMS. AT NO TIME DID I FEEL UNCOMFORTABLE OR WAS THERE ANY CONCERN ABOUT TFC AND/OR OPS. I UNFORTUNATELY DID NOT CATCH THE CHANGE TO THE TWR FROM APCH FREQ, DUE TO COMS WITH FLT SVC AND THE PAX.

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.