B767-300 and 300 ER
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Situational Awareness; Other / Unknown
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Weight And Balance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Company Policy; Human Factors
[A] container loaded in front part of aft cargo and wasn't locked in. [The] container came in from ZZZ and was never offloaded. Had this container shifted back during takeoff; [the result] could have been catastrophic. Not only was this container not offloaded in PHL; it wasn't relocked or checked prior to departure to ZZZ1. [The] container weighed 1;400 Kg.
A Boeing 767 Captain reported a cargo container was improperly secured in the aft cargo area.