B737-800
Human-Machine Interface; Time Pressure
Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Gate; General Maintenance Action
Human Factors; Procedure
I was the lead. I preplanned the trip with the DG in Pit 1 along with the required 15 bag min. Time to load: DG went up 1st and it was put in the pit. Bags went up next as I scanned them into pit 3. My thought process that I would put the last 15 - 20 up in pit 1 not sure how I forgot to do that. The plane pushes on time and I close out the trip. I was called back to the gate to rectify the problem. Myself and another [Manager] went out to the aircraft waiting in the alley. I plug in to get the ok to open front pit and move DG from 1 to 3 and have it secured. Meanwhile I am explaining the situation to the pilot and told him that I made a mistake and loaded the DG without the bag requirement. I apologized for my mistake and told him that I knew better.
Ground employee reported incorrectly loading Hazmat. Additionally reported being summoned to correct the Hazmat load.