Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 150; Flight Crew Total 16000; Flight Crew Type 200
Situational Awareness; Training / Qualification
Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Departure Airport
Human Factors
Instructed by company to return to departure airport due to unauthorized corrosive material boarded in the bulk cargo compartment. Jettisoned approximately 40;000 lbs of fuel for landing at departure airport per checklist. Landed; had cargo removed; refueled; and departed for destination.
B777 First Officer reported returning to the departure airport after being notified they had unauthorized corrosive material onboard.