The U.S. aircraft register, updated daily
Parts

Serial To

No failure report names the serial to. 1 FAA approvals let 1 company make a replacement serial to, Shadin Avionics holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Airbus A321 (1), Airbus A320 (1), Airbus A319 (1).

MakerPartReplacesFitsGrantedStatus
Shadin AvionicsSerial to ARINC 429 Adapter 833640-00833640-00Airbus A319, A320, A321 Series2017-12-14current

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.