B737 Undifferentiated or Other Model
Communication Breakdown; Human-Machine Interface
Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance; Ground Event / Encounter Other / Unknown
General None Reported / Taken
Human Factors
Ramp cargo ground personnel work as a Lead in one of my outbounds Aircraft X going to ZZZ1 leaving ZZZ at XA:37. I run into the same problem as before; missing 1155 pounds of cargo and like I explain in my last report our Cargo Facility they; most of the time; bring the Hazmat or Cargo carts at the last minute. The problem is that as a Lead we have to set up the scanners prior we Load our planes otherwise we can't do anything. That being said we are not allowed to load the aircraft if we don't pit our bags; cargo or even the mail. And yesterday like any other day I did what I usually do; pit all my stuff. In this case I only saw and put on the plane 11 bags and 2 small boxes. One was a quick pack and the other one a box with Human Tissue between both items it was no more than 20 lbs.
ZZZ gate control manager notified of an error after takeoff for discovering cargo at 1155lbs was not loaded on the aircraft. The gate manager stated cargo manager (name) notified of cargo DSTG [Departure Staging Guide] item 2 remained planeside in their warehouse. This revision generated a significant weight change of 1;155lbs representing 0.82% adjustment from the original takeoff weight. Percent MAC adjusted from 14.3 to 15.8 / +1.5.
Air Carrier Lead Ground personnel and load crew reported recurring issue of late planeside arrival of Hazmat cargo which results in departure delays; cargo weight and cargo handling errors.