Narrative:

Called airport in sight. Center cleared for visual approach. Do not remember center switching us to tower (don't think they did). During short final realized we were still on center frequency. Switched to tower on rollout. No other traffic in area. Supplemental information from acn 390081: on short final crew requested landing clearance and realized they were still on approach control. There was not time to change frequencys before landing. Copilot was fresh out of school. Captain flying and workload a consideration.

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Original NASA ASRS Text

Title: A WDB PAX ACFT MAKES AN UNAUTH LNDG AT GUM. FO FAILED TO CHANGE TO TWR FREQ. FO CITES CTLR'S FAILURE TO SWITCH THEM OVER TO THE TWR.

Narrative: CALLED ARPT IN SIGHT. CTR CLRED FOR VISUAL APCH. DO NOT REMEMBER CTR SWITCHING US TO TWR (DON'T THINK THEY DID). DURING SHORT FINAL REALIZED WE WERE STILL ON CTR FREQ. SWITCHED TO TWR ON ROLLOUT. NO OTHER TFC IN AREA. SUPPLEMENTAL INFO FROM ACN 390081: ON SHORT FINAL CREW REQUESTED LNDG CLRNC AND REALIZED THEY WERE STILL ON APCH CTL. THERE WAS NOT TIME TO CHANGE FREQS BEFORE LNDG. COPLT WAS FRESH OUT OF SCHOOL. CAPT FLYING AND WORKLOAD A CONSIDERATION.

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.