The U.S. aircraft register, updated daily
Parts

Copper Bus

No failure report names the copper bus. 3 FAA approvals let 1 company make a replacement copper bus, L-3 Communications Integrated Systems holding the most (3).

Approved replacement parts 3 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a copper bus and sell it as an approved part for the models named. These are the companies holding such approvals for a copper bus:

For these models most: Air Tractor Inc AT-802 (3).

MakerPartReplacesFitsGrantedStatus
L-3 Communications Integrated SystemsCOPPER BUS L2105‐1Modification PartAir Tractor Inc. AT‐8022024-01-25current
L-3 Communications Integrated SystemsCOPPER BUS L2104‐1Modification PartAir Tractor Inc. AT‐8022024-01-25current
L-3 Communications Integrated SystemsCOPPER BUS L2103‐1Modification PartAir Tractor Inc. AT‐8022024-01-25current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.