Narrative:

During power advance on takeoff I heard a faint bump and a sliding sound. I thought it was either the ice chest sliding in the aft cabin or the restroom door opening. Pilot monitoring stated; 'was that a can?' I checked engine instruments and continued takeoff. I didn't see any indication that the aircraft was unsafe to fly. Rotation; climb and enroute cruise were normal. When we started descent we felt cargo cans move behind us and make a banging sound. We heard the same sequence of sounds when the jet was fully configured for landing and during deceleration during landing rollout. I entered a write-up stating we heard a banging sound from the main cargo deck during descent; and asked for an inspection for damage. Maintenance personnel inspected both the main cargo area and lower forward hold. They found a can unsecured in the forward lower hold near a void. The write-up stated there was no damage to the aircraft. I believe the load crew did not secure a can in lower forward hold.I'm not an expert in load procedures so I don't have any suggestions in that regard. I do think aircrews need clearer guidance on loose cans in the hold that are 'heard' or discovered during the takeoff roll. The sound my pilot monitoring heard was pretty subtle; I didn't hear it clearly and didn't identify it as a loose can. Of course; we have had accidents with load shifts on takeoff across the industry; so this is a concern. We didn't clearly identify the sliding and banging as a loose can until we started descent; lower power setting; less cockpit noise; etc. A bit of a tricky situation. Had we had a big bang/slam on power application on takeoff; I would have rejected. We didn't get that definitive an indication.

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Original NASA ASRS Text

Title: Wide body cargo aircraft flight crew reported they experienced a load shift on takeoff because some cans were not properly secured.

Narrative: During power advance on takeoff I heard a faint bump and a sliding sound. I thought it was either the ice chest sliding in the aft cabin or the restroom door opening. Pilot Monitoring stated; 'Was that a can?' I checked engine instruments and continued takeoff. I didn't see any indication that the aircraft was unsafe to fly. Rotation; climb and enroute cruise were normal. When we started descent we felt cargo cans move behind us and make a banging sound. We heard the same sequence of sounds when the jet was fully configured for landing and during deceleration during landing rollout. I entered a write-up stating we heard a banging sound from the main cargo deck during descent; and asked for an inspection for damage. Maintenance personnel inspected both the main cargo area and lower forward hold. They found a can unsecured in the forward lower hold near a void. The write-up stated there was no damage to the aircraft. I believe the load crew did not secure a can in lower forward hold.I'm not an expert in load procedures so I don't have any suggestions in that regard. I do think aircrews need clearer guidance on loose cans in the hold that are 'heard' or discovered during the takeoff roll. The sound my Pilot Monitoring heard was pretty subtle; I didn't hear it clearly and didn't identify it as a loose can. Of course; we have had accidents with load shifts on takeoff across the industry; so this is a concern. We didn't clearly identify the sliding and banging as a loose can until we started descent; lower power setting; less cockpit noise; etc. A bit of a tricky situation. Had we had a big bang/slam on power application on takeoff; I would have rejected. We didn't get that definitive an indication.

Data retrieved from NASA's ASRS site 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.