Narrative:

After arriving in ZZZ1; maintenance did a maintenance walkaround for our jet and discovered significant damage around the aft cargo door frame. After conferring with engineering; aircraft was taken OTS and flight abc was canceled. No damage was noted by the first officer on his walkaround in ZZZ. He did the walkaround prior to ground support personnel loading the aircraft. I suspect the damage occurred in ZZZ and was the result of a belt loader striking the aircraft. No pressurization problems were noted during flight (FL390).

Google
 

Original NASA ASRS Text

Title: B737-700 FLT CREW DISCOVERS ACFT DAMAGE AFTER LNDG.

Narrative: AFTER ARRIVING IN ZZZ1; MAINT DID A MAINT WALKAROUND FOR OUR JET AND DISCOVERED SIGNIFICANT DAMAGE AROUND THE AFT CARGO DOOR FRAME. AFTER CONFERRING WITH ENGINEERING; ACFT WAS TAKEN OTS AND FLT ABC WAS CANCELED. NO DAMAGE WAS NOTED BY THE FO ON HIS WALKAROUND IN ZZZ. HE DID THE WALKAROUND PRIOR TO GND SUPPORT PERSONNEL LOADING THE ACFT. I SUSPECT THE DAMAGE OCCURRED IN ZZZ AND WAS THE RESULT OF A BELT LOADER STRIKING THE ACFT. NO PRESSURIZATION PROBS WERE NOTED DURING FLT (FL390).

Data retrieved from NASA's ASRS site as of January 2009 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.