The U.S. aircraft register, updated daily
Parts

Plate Plenum

No failure report names the plate plenum. 5 FAA approvals let 2 companies make a replacement plate plenum, L-3 Communications Integrated Systems holding the most (3).

Approved replacement parts 5 parts manufacturer approvals

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

For these models most: Air Tractor Inc AT-802 (3), Airbus A300 (2).

MakerPartReplacesFitsGrantedStatus
L-3 Communications Integrated SystemsPLATE-FWD PLENUM ATTACH L2133‐1Modification PartAir Tractor Inc. AT‐8022024-01-25current
L-3 Communications Integrated SystemsPLATE-AFT PLENUM ATTACH L2132‐1Modification PartAir Tractor Inc. AT‐8022024-01-25current
L-3 Communications Integrated SystemsPLATE-PLENUM LWR ATTACH L2131‐1Modification PartAir Tractor Inc. AT‐8022024-01-25current
Wencor LLCPlate-Plenum Retaining 977743-1WE977743-1Airbus A300, A300, Model B2-1A2015-02-01current
Wencor LLCPlate-Plenum Retaining 977743-2WE977743-2Airbus A300, A300, Model B2-1A2015-02-01current

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.