Maintenance Inspection Authority
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Hazardous Material Violation
Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem; General Maintenance Action
Human Factors
Outbound Aircraft X on Date scheduled ZZZ-ZZZ1 had a Part Power Stops [priority package] for the flight. Our procedure is cargo goes to Operations drops off [with] paper work and Operations notifies crew chief that a Part Power Stops is scheduled for their flight. No word or mention at that time of package needing a Dangerous Goods Form. Package was loaded [in] accordance to load instruction from ZZZ1. After flight arrived in ZZZ1 and transferred to cargo. At that time it was stated a Dangerous Goods Form was required. From my understanding miscellaneous class 9 UN3373 [label] was on box. However no photos available.[Lead Avionics Technician stated] it was brought to my attention my station director [name] on DATE. Vendor in ZZZ cargo does all cargo and Part Power Stops ...they have the responsibility of knowing the contents of package and [determine] if Dangerous Goods Form is required. After being spoken to about this I did research on misc 9 UN3373 'gmmo or gmo that does not meet the definition of toxic substances or infectious substance shall be assigned a UN number. Now with that being said we do our DG training which gives us general knowledge of Hazmat material... there should be copies of all packages that originate from cargo facility so when we sign for packages we can refer to package and information to crew chief. I am not schooled enough in such practices that we can remember all package numbers that require Dangerous Goods Form. [Recommend] that all packages from cargo have to be signed for and also duplicate copies given to Ops; also oral confirmation of type package and contents.
Air carrier Inspector reported undocumented hazmat cargo was transported due to a breakdown of hazmat handling procedures.