Narrative:

During climb out, just as a turn was initiated during the climb, a minor vibration was felt for approximately 1 second. I commented to the first officer that it felt like a cargo container had shifted as I had experienced many times before on the B767. The flight attendants called to report that they had felt the vibration as well. The remainder of the flight was conducted within normal parameters. After landing, the hydraulic access door/panel was found to have partially separated from the aircraft.

Google
 

Original NASA ASRS Text

Title: A SHORT DURATION VIBRATION DURING CLB THAT IS NOTED BY BOTH THE CABIN AND COCKPIT CREW IS ASSUMED TO BE CAUSED BY A HYD SVC PANEL ACCESS DOOR THAT, DURING THE AFTER LNDG INSPECTION, WAS FOUND TO HAVE PARTIALLY SEPARATED FROM THE B767-300.

Narrative: DURING CLBOUT, JUST AS A TURN WAS INITIATED DURING THE CLB, A MINOR VIBRATION WAS FELT FOR APPROX 1 SECOND. I COMMENTED TO THE FO THAT IT FELT LIKE A CARGO CONTAINER HAD SHIFTED AS I HAD EXPERIENCED MANY TIMES BEFORE ON THE B767. THE FLT ATTENDANTS CALLED TO RPT THAT THEY HAD FELT THE VIBRATION AS WELL. THE REMAINDER OF THE FLT WAS CONDUCTED WITHIN NORMAL PARAMETERS. AFTER LNDG, THE HYD ACCESS DOOR/PANEL WAS FOUND TO HAVE PARTIALLY SEPARATED FROM THE ACFT.

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.