Commercial Fixed Wing
Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Hazardous Material Violation
Flight Crew Returned To Gate; General Maintenance Action; General Flight Cancelled / Delayed
Human Factors; Procedure
Hazmat loaded without secure and aircraft returned to gate to move 421 lbs. of mail to other pit to add 15 bags with the Hazmat.
Ground personnel reported aircraft ground return to correct Hazmat cargo configuration loading discrepancy.