The U.S. aircraft register, updated daily
Parts

Configuration

No failure report names the configuration. 10 FAA approvals let 5 companies make a replacement configuration, Ems Aviation INC (Formerly Sky Connect LLC) holding the most (3).

Approved replacement parts 10 parts manufacturer approvals

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

For these models most: Sikorsky S-76 (4), Airbus A321 (2), Gulfstream G-IV Gulfstream IV (1), Dassault FALCON 2000 (1), Bell 206 JetRanger and LongRanger (1), Airbus A320 (1).

MakerPartReplacesFitsGrantedStatus
Rockwell Collins INCConfiguration Kit, PSCU1 998-4000-021998-4000-021Airbus A321-111, A321-112, A321-1312016-06-02current
Rockwell Collins INCConfiguration Kit, PSCU 1 998-4000-023998-4000-023Airbus A318-111, A318-1122016-06-01current
B/E Aerospace INCCONFIGURATION KIT DFJ-KIT2-01DFJ-KIT2-01Dassault Aviation Falcon 2000EX2015-03-17current
Ems Aviation (Formerly Ems Formation INC)Configuration / SIM Module 1616-905-021616-905-02Sikorsky Aircraft Corporation S-76A, S-76B, S-76C2012-12-19current
Ems Aviation (Formerly Ems Formation INC)Configuration / SIM Module 1616-905-021616-905-02Bell Helicopter... 206B, 206L-1, 206L-32011-03-23current
Ems Aviation (Formerly Ems Formation INC)Configuration / SIM Module 1616-905-021616-905-02Sikorsky S76A, S-76B, S-76C2011-03-08current
Ems Aviation INC (Formerly Sky Connect LLC)Configuration/SIM Module 1616-905-02Modification PartSikorsky S-76A, S-76B, S-76C2009-07-23current
Ems Aviation INC (Formerly Sky Connect LLC)Configuration / SIM Module 1616-905-02Modification PartGulfstream G-IV2009-05-26current
Rockwell Collins INCConfiguration Kit, PSCU1 998-4000-021998-4000-021AIRBUS A321-111, 112, 1312008-04-02current
Ems Aviation INC (Formerly Sky Connect LLC)Configuration/SIM Module 1616-905-02Modification PartSikorsky S-76A, S-76B, S-76C2007-08-27current

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.