B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Training / Qualification
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance
Human Factors; Procedure; Staffing
On approach into ZZZ while hand flying the aircraft I felt multiple elevator buffeting and pitching movement. I wrote the anomaly up as 'significant elevator buffeting.' After my rest period; I was contacted by two different sources that Maintenance in ZZZ had found three ULD cargo containers were free floating and the floor locks were not in up/secured position. Aft cargo position 32-34 were found to have shifted and moved during flight. This would explain the vibrations or buffeting I felt and the pitching movement. I don't think it needs to be reiterate the extreme importance of securing cargo properly or the catastrophic effects load shift have had on aircrafts in the past. Requalification and retraining would be the very least of suggestions to make sure this is mitigated.
B767 Captain reported elevator buffeting on approach was caused by unsecured loads shifting in the aft section of the aircraft.