The U.S. aircraft register, updated daily
Parts

Sub Panel

No failure report names the sub panel. 2 FAA approvals let 2 companies make a replacement sub panel, Western Filter A Division of Donaldson Company INC holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Cessna 560 Citation V, Ultra, Encore and Excel (1), Cessna 208 Caravan (1).

MakerPartReplacesFitsGrantedStatus
Mag AerospaceSUB-PANEL ASSY RIGHT HAND 2017006-008-255Modification PartTextron Aviation Inc 208 208B2022-07-15current
Western Filter A Division of Donaldson Company INCSub Panel Hydraulic Filter WF3345969912281-8Cessna 5602009-04-27current

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.