The U.S. aircraft register, updated daily
Parts

Aircraft Configuration

No failure report names the aircraft configuration. 4 FAA approvals let 1 company make a replacement aircraft configuration, Aviation Communication and Surveillance Systems holding the most (4).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Airbus A330 (2), Beechcraft B200 King Air B200 (1), Airbus A321 (1).

MakerPartReplacesFitsGrantedStatus
Aviation Communication and Surveillance SystemsAircraft Configuration File 9000776-028 (Media No. 9400005-028)Modification PartAirbus A321-200 Series2019-12-04current
Aviation Communication and Surveillance SystemsAircraft Configuration Data Software 9100009-06004F9100009-06004FBeechcraft B200GT, B200CGT2015-03-18current
Aviation Communication and Surveillance SystemsAircraft Configuration File 9400005-020FModification PartAirbus A330-200 Series, A330-300 Series2013-08-28current
Aviation Communication and Surveillance SystemsAircraft Configuration File 9400005-018FModification PartAirbus A330-200 Series, A330-300 Series2013-02-10current

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.